L33t Scrabble

During a rather satisfying game today (i.e., I won when I really shouldn't have) we came up with a rules variant: L33t Scrabble, where you can play a tile as either the letter or the score number on it. Scoring would still follow the original distribution, to prevent things from getting unbalance. (So a C/3 being played as an E would only be worth 1 point, like normal Es.)

I have no idea how fun it would be to play, but I love the idea.