Sorry for another addictive game, but I can’t help myself. This one apparently comes from the guys at area/code. The basic idea is to clear as much of the board as possible by dropping a numbered disc into a row or column with that number of total discs in it. Sounds confusing, but it’s really not (though there’s certainly more nuance to it than that).
Update (12/20/07): Just got 286,511 points . . .