For all you turn based sim players...
Civilization : Revolution
NOTE: The iPhone version is cheaper and plays well in 2x mode. The iPad version is p-r-i-c-e-y and you don't get much except an expanded view. But it's one of my favs.
For all you Puzzle fanatics...
Chapter 2 Mahjong Aritfacts...Mahjong but with very good graphics and an attempt at a storyline.
For you Free-bo players...
Paper Toss, Paper Football, Removem 2, and Shroom HD
Suck-Ass games (YMMV..I didn't like them AND I paid for them

)
Sherlock Holmes Mysteries
10 pin
DeerHunter
I have Brothers-in-Arms : Hour of the Heroes that I got free when it first came out...No lag, ok graphics, virtual joysticks. COD:Zombies can lag but it's basically the same.
Anyone else got some input? I like sim games and stuff like PuzzleQuest (hint..hint..)