What Are Your Most Hated Default Windows Apps?

Whether you install it accidentally or it's something you're told you "need", there's a lot of crappy software out there—and many of us use it without thinking. What are your most hated Windows apps that people say you "need"?

It's been a few years since our last look at crappy Windows software, and the world has changed a little bit. Whether it's software that came bundled on your machine, came on the CD with your new printer, a toolbar bundled with a download, or is just one of those apps everyone tells you you "need" (I'm looking at you, Adobe Reader), crapware abounds in the Windows ecosystem. We're wondering: What are your least favorite programs in the Windows world, and what, if any, alternatives or solutions do you recommend for them? We'll be back with a big roundup later on, so hit us with as many as you can think of in the comments.

Note: There seems to be confusion about what we mean by "default". We don't necessarily mean software that comes with Windows—although that counts—but it's more about what people use as the "default". Adobe Reader is most people's go-to PDF reader, for example and WinZip is the world's "default" ZIP handler. Third-party programs are definitely fair game here; it isn't just about pre-installed programs.
