Street Fighter HD Remix is on sale for $10 this week on XBLA, rather than the usual $15 price. Here's the long list of features that you get for this surprisingly low price.
If you're late to the party on this game, it's an update to Super Street Fighter 2 Turbo where the bottom tier characters are better and the top tier is just barely worse. Many lopsided matchups from the previous game are now less lopsided and move inputs like Cammy's Hooligan throw and Fei Long's flying kick ("chicken wing") are no longer difficult for the sake of being difficult. You even get SSF2T (without any gameplay changes) in the package as well.
You can read a lot more about the game here.