That's a list of some great games there, ColeDaddy, and we're flattered that you thought Quell worthy enough to list amongst them!
Helsing's Fire (the latest in addicting, fun and unique pick-up-and-plays). Prince of Persia (just for the novelty that a PS2 game has been ported so smoothly). Super Quick Hook (HATS!). Jet Car Stunts (one of the best games on the App Store). Labyrinth 2 (Sleek, challenging and whats more, you can make your own levels). Tilt to live (updates and shear awesomeness). Hector: Badge of Carnage (For the comedy!) Archetype (an amazing example of online FPS done right). X2 Football (I may not be a big footy fan but ever since I have got thisgame I have been addicted).
The big ones for me are: Archetype Frogatto Fruit Ninja PES 2010 Pocket Legends And by the amount I've played so far, also Crimson Gem Saga. There are plenty of others, but the ones I've mentioned have either pushed the boundaries of iDevice gaming or are just really good fun.