Our gentle, yet kind, cousin over at Kotaku is suddenly showing us up by posting this excellent hack which turns the Atari Flashback 2 into a real, live Atari console that can accept cartridges and cause fights between you and your brother about who gets to play the next board of Pac Man. An aside: BWANG BWANG BWANG! What were they thinking back then?
The page is currently Slashdotted (Kotakued?) so there's no way to get to it but rest assured the detailed instructions will truly allow you mastery of your gaming domain.