user7376: I'm finding annotated chess games very handy to increase my level of chess knowledge.
Are there any recommendations on good online resources for annotated games?
I've found a few, but the annotations are either not very good, or the ratings of the players are very low.

user14586: Here are a bunch, although they are supposed to be used with a defunct product called ChessVU: http://www.angelfire.com/games3/smartbridge/  Note the huge and deeply annotated middle-game database.  Edit: I have since tried some of these games out with SCID vs. PC, and it works great.  That middle-game tutorial seems to be a really great resource; and there are many other there, too.
Follow-up: Many of these links are broken and/or pop up ads.  While it's still worth going through, I'd make sure to either use a sandbox, or a chromium variant.  Some of those same materials are here:
Chess Openings: Opening Analysis on the Web
Some of these are annotated games, some are raw PGN, and some are other materials.  They are nicely broken down by opening.
This guy at https://pathtochessmastery.blogspot.com/ calls himself only "ChessAdmin", and calls himself a Class C player.  On the right column of his blog, he has two databases you can download, one with 180 of his own games, and 77 games of masters, that he's commentated.
Here's a small, older cache of annotated games, for those who are still using the discontinued Chessmaster software:
Chessmaster Grandmaster Edition Downloads | Forums

user17649: I'm glad some have found the downloadable annotated PGN game archives at Path to Chess Mastery - https://pathtochessmastery.blogspot.com/ - useful. Although the individual game analyses (my own tournament games and commentary on Master games) have been posted on the blog for training purposes, I think a number of the positional and tactical insights gained could be of general interest for improving Class-level players. I'm a Class A player that uses the Komodo engine for position evaluation (with my own explanations), so you get what you pay for, heh.
As a more general answer, I find that there are a lot of good Chess.com master videos that in fact consist of annotated games - often disguised as training in particular openings or on middlegame principles or whatnot - but there is a paywall, so no unlimited access.

user19786: The best annotated PGN game collections I found were added to my website after searching for days, see
Annotated PGN file download page
I added 950+ annotated games and every world championship match game ever played. 
You can get a good free PGN reader app from there too, which comes with Stockfish built in.
If any one knows about any other annotated ".pgn" sites please can you post here? 

user7245: Here are some of Annotated game archives I found:
GameKnot Annotated Games
ChessGames.com Annotated Archive
PGN Mentor
Use this method to search for annotated games: Search for annotated games
Will add more when I find them.

user4362: There are blogs and news sites that regularly publish analysis of recent games. Chess24 also provides a lot of videos with analysis of games, competing in that regard with various youtube channels. 
You can also find annotated games on Chessgames.com, most easily in the form of game collections via google "site:chessgames.com annotated". 

7376: <p>I'm finding annotated chess games very handy to increase my level of chess knowledge.</p>

<p>Are there any recommendations on good online resources for annotated games?
I've found a few, but the annotations are either not very good, or the ratings of the players are very low.</p>
 14586: <p>Here are a bunch, although they are supposed to be used with a defunct product called ChessVU: <a href="http://www.angelfire.com/games3/smartbridge/" rel="nofollow noreferrer">http://www.angelfire.com/games3/smartbridge/</a>  Note the huge and deeply annotated middle-game database.  Edit: I have since tried some of these games out with SCID vs. PC, and it works great.  That middle-game tutorial seems to be a really great resource; and there are many other there, too.</p>

<p>Follow-up: Many of these links are broken and/or pop up ads.  While it's still worth going through, I'd make sure to either use a sandbox, or a chromium variant.  Some of those same materials are here:</p>

<p><a href="http://www.rci.rutgers.edu/~goeller/urusov/links/opening_analysis.html" rel="nofollow noreferrer">Chess Openings: Opening Analysis on the Web</a></p>

<p>Some of these are annotated games, some are raw PGN, and some are other materials.  They are nicely broken down by opening.</p>

<p>This guy at <a href="https://pathtochessmastery.blogspot.com/" rel="nofollow noreferrer">https://pathtochessmastery.blogspot.com/</a> calls himself only "ChessAdmin", and calls himself a Class C player.  On the right column of his blog, he has two databases you can download, one with 180 of his own games, and 77 games of masters, that he's commentated.</p>

<p>Here's a small, older cache of annotated games, for those who are still using the discontinued Chessmaster software:</p>

<p><a href="https://forums.ubi.com/showthread.php/341421-Chessmaster-Grandmaster-Edition-Downloads-Forums" rel="nofollow noreferrer">Chessmaster Grandmaster Edition Downloads | Forums</a></p>
 17649: <p>I'm glad some have found the downloadable annotated PGN game archives at Path to Chess Mastery - <a href="https://pathtochessmastery.blogspot.com/" rel="nofollow noreferrer">https://pathtochessmastery.blogspot.com/</a> - useful. Although the individual game analyses (my own tournament games and commentary on Master games) have been posted on the blog for training purposes, I think a number of the positional and tactical insights gained could be of general interest for improving Class-level players. I'm a Class A player that uses the Komodo engine for position evaluation (with my own explanations), so you get what you pay for, heh.</p>

<p>As a more general answer, I find that there are a lot of good Chess.com master videos that in fact consist of annotated games - often disguised as training in particular openings or on middlegame principles or whatnot - but there is a paywall, so no unlimited access.</p>
 19786: <p>The best annotated PGN game collections I found were added to my website after searching for days, see</p>

<p><a href="https://pgnchessbook.org/pgn/" rel="nofollow noreferrer">Annotated PGN file download page</a></p>

<p>I added 950+ annotated games and every world championship match game ever played. 
You can get a good free PGN reader app from there too, which comes with Stockfish built in.</p>

<p>If any one knows about any other annotated ".pgn" sites please can you post here? </p>
 7245: <p>Here are some of Annotated game archives I found:</p>

<p><a href="https://gameknot.com/best-annotated-games.pl" rel="nofollow noreferrer">GameKnot Annotated Games</a></p>

<p><a href="http://www.chessgames.com/perl/ezsearch.pl?search=annotated" rel="nofollow noreferrer">ChessGames.com Annotated Archive</a></p>

<p><a href="http://www.pgnmentor.com/files.html" rel="nofollow noreferrer">PGN Mentor</a></p>

<p>Use this method to search for annotated games: <a href="https://www.youtube.com/watch?v=WjJmqiO-xBY" rel="nofollow noreferrer">Search for annotated games</a></p>

<p>Will add more when I find them.</p>
 4362: <p>There are <a href="http://www.thechessmind.net">blogs</a> and <a href="http://en.chessbase.com">news</a> <a href="https://chess24.com">sites</a> that regularly publish analysis of recent games. Chess24 also provides a lot of <a href="https://www.youtube.com/user/chess24media">videos</a> with analysis of games, competing in that regard with <a href="https://www.youtube.com/user/PowerPlayChess">various</a> <a href="https://www.youtube.com/user/kingscrusher">youtube</a> <a href="https://www.youtube.com/user/Chessexplained">channels</a>. </p>

<p>You can also find annotated games on Chessgames.com, most easily in the form of <a href="http://www.chessgames.com/perl/chesscollection?cid=1004072">game</a> <a href="http://www.chessgames.com/perl/chesscollection?cid=1013362">collections</a> via google "site:chessgames.com annotated". </p>
