If you don't have it yet, Sword and Sworcery is really really good. I personally didn't enjoy it that much but it'a universally acclaimed. Asphalt 7 is actually pretty good for a gameloft game and only a buck. Zombieville 2 is fun and I'd definitely recommend it if you like the Castle Crashers/Side-scrolling fighting genre

to make that list a little bigger again
From the other games already mentioned, I can't say much about contre jour or fieldrunners, but super hexagon is AMAZING and ski safari is pretty good too.