One from the past: Konami sale (Silent Hill, MGS and others 59p
Current fun: I dig it 2 - a game I love, the first one was brilliant and this takes it further, everybody I know who has played it, ends up addicted...
Future load: N.O.V.A (Halo basically) released tomorrow £5.99
Others to look at;
Driver - the classic car chase game makes waves on Iphone, its fantastic.
Tiger Woods - best golfing game on it, only thing missing is the option to sink a birdie.
Worms - the best game ever for multiplayer but even single player on Iphone can be fun.
Pandemonium - Old PS1 classic, exactly as I remember it. Only problem is I find the controls a little awkward sometimes.
Boggle - get that mind working, perfect brain training.
Goals Pro - sensible soccer on the Iphone (needs updates but not bad so far)