I'm a total freak for PopCap games. I don't think a week goes by that I don't play at least one of their puzzle titles. I'm sure I have them all, but I should double check as they're all 50 percent off this week on Xbox Live.
That's Plants vs. Zombies ($7.50), Peggle (and Peggle Nights), Bejeweled 2 and more. I'm a huge Zuma fan (200 points, $5). Oh, and more people need to get Bejeweled Blitz Live, which is actually 75 percent off, now at 200 Microsoft Points. The never-ending competitive mode is great. I'll play you!