Free shinies! Win a flashing Critical Hit LED D20 by guessing how many dice are in the jar by 5pm ET. To enter, tweet to @thinkgeek w/ tag #critd20.
(FINE PRINT: Only numerical (ie 42) guesses will be honored; smarty-pants algorithms (solve for x where 43 = x +1), words (forty-two), and languages such as binary (101010) will not be accepted. If you guess more than once, we'll only accept your last guess.)