My favourite: Deluxe Pacman, and Nigel Mansells' World Championship ( you need at least an '030 to get the smooth frame rates with this, but it is a very under-rated driving game, probably because it was run on OCS A500's at the time.)
I've just started to get back into amiga gaming on a real amiga after playing on Winuae with an analogue stick. Man do I suck!!! How did we ever manage to play using the traditional sticks I'll never know!! Games like speedball, Sensi, virtually every platformer and even driving games and deluxe pacman, are so much more playable with an analogue stick, even a digital pad. And hence far more enjoyable. But that might be me after 10 years of analogue on the consoles.