London 2012 isn't too bad. It's a lot of sports minigames, as in rhythmic stick movement for swimming and button tapping (not too fast or too slow) for running events. I think it's an easy recommendation for $8. I'm half-tempted to pick it up again. I sold my 360 version for almost $30 on Amazon a few weeks ago. The PS3 version isn't going for quite as much, but if you were to buy the game and play it when it came in, you could at least make you money back on resell, if not more.
I hope these daily deals stick around for a while. I myself am waiting on MP3 to hit that magical $10 price point, and I'd love to see Darksiders II at $17.99 or less.