A visit to Akiba isn't complete until you've sipped a cappuccino topped with a frothy bear design in a maid cafe where the waitress is dressed in a French maid cosplay outfit. Jam doesn't have a cover charge, and also serves a small selection of bottled craft beers. It can get a little smokey, though, as half the room is reserved for smokers.
Jam Akihabara
Kōrakuen & Akihabara