I have played lots of games on my iPhone 4 but are there any which are specific for the iPad or ones which give you exclusive things for only iPad. One game which took my fancy was the Pocket God one for iPad, is it any good?
When you like arcade racers go for Asphalt 6: Adrenaline. I am playing it almost every day on both iPad 1 and iPad 2 and it looks better on the latter. Maybe you prefer racer simulators then take Real Racing 2. Fullscreen HD TV-Out with optional cable.