I've just discovered a very addictive web based computer game which I really can't stop playing.
It's sort of along the lines of tetris based games but ties the fingers in knots less so better for those with ventolin shakes or cramp-prone hands!
Find it at zone.msn.com/en/bejeweled2/...
(Don't believe this counts as illegal advertising as the game is free to play, but if it does, mods, please remove the email address)
Hours of fun... good job I have nothing better to do!