That annoying arcade game you see at Wal-Mart
. You must stack bricks on top of one another by hitting the button at the exact milisecond. You can win a crappy dollar store consolation prize, or go for the bigger prizes. Makes an annoying "woo-ooh" sound when you hit the button right.
Crap! I just spent $10 at stackers and all I got was a lousy hippo keychain.