Sawbuck Gamer, the AV Club's bi-weekly collection of cheap or free games, mostly for browsers and iPhones. It's where I found Canabalt (which I still <3) and there are a few others I've tried which are neat. Dig through the articles and you'll probably find something fun and unusual.
I never played the older ones, but the designer is the same. My wife has gotten alot of chuckles wandering past when I was playing and I've found myself singing along with every song in the game, thanks to the "follow the ball" lyrics.