Late Night host Jimmy Fallon is a big geek and is addicted to Twitter. So last night he appeared on G4's Attack of the Show to play Tic-Tac-Toe. Or, more accurately, to play Tweet Tac Toe (or #tweettactoe, in the world of Twitter hash marks). But they didn't play it alone. Fallon and the host actually got their Twitter followers to give them the moves.

Somewhere, someone is working on a Chutes and Ladders game you can play on LinkedIn, and it's going to be awesome.