The Superest is bloody good. I blogged a while back about this great superhero doodling game called My Team, Your Team, now Kevin Cornell and Matthew Sutter have gone and built this amazing site to showcase their ongoing quest to find the superest hero of all.
The rules are simple:
Player 1 draws a character with a power. Player 2 then draws a character whose power cancels the power of that previous character. Repeat.
I shall be checking it daily from now on.