The "Sonic Christmas Blast" DVD consists of the Sonic Christmas Blast special (about 22 minutes long) and 3 Sonic Underground episodes. The Christmas episode itself seems like only a child would enjoy it (and probably a young adult that saw the special when it originally aired in the late 90's). The animation and plot is laughably simple and ridiculous.As for the 3 Sonic Underground episodes, they're terrible. Children might be confused by the sudden change of characters and plot when the Christmas special ends and the Underground episodes begin. Underground is a completely different series in which Sonic has a brother and sister and is on a quest to find their mother. The animation consists of moddy dark colors, the plot itself is a little dark (very much so for a children's cartoon) and in each episode Sonic and his siblings sing a terrible song that makes Barney seem like Pavarotti.If you're buying for kids, it may be a decent DVD. Otherwise, I wouldn't bother.