Brad Delong has some really interesting math problems (and answers). Very cool, and fun!
This could be blogtopia's (y! sctw!) version of the Sunday Times crossword! More, Brad, More!
I hate to be the barer of bad news, but you've got the wrong link, DemVet. I think you meant to direct people here.
Bad, bad, Jo! Keep that up and we'll make you read Ann Coulter's latest shitty book - without any booze.
Fixed the link...thanx Rook!