Loco roco is amazing! Weird Japanese game which is simple yet highly addictive. The music is amazing and will get stuck in your head! Check out the reviews on amazon:
Gripshift is a very good drving/puzzle game. You have to drive a car round a track and get to the end before the time runs out. You then also have to play complete collecting all the stars. And then collecting a special token thats noormally hidden. You will find yourself keep trying and saying to yourself "just one more go"!
Brilliant game, wicked soundtrack and only 9.99 at play.com