Wouldn't it be funny if the Professor heckled you if you take too long to solve a puzzle?
Also along the puzzle vein, I downloaded Puzzle Bobble/Bust-a-Move for my Ipod! Many a happy childhood memory I had with this game and the original Bubble Bobble. Playable Flash version of Bubble Bobble
My favourite theme song of all time:
I'm also playing Chaos Rings*, recced by fluffyduck . It's so good, and easy to put down and pick up. :D I only wish my ipod had a longer battery life for it, it really sucks up the juice!
*which, incidentally, contain puzzles as well.