Post any good April Fools links here. One I think is a joke is EGM's report of Lego Halo.
http://www.gamercenteronline.net/?p=244
EGM also reported that Bungie was working on a multiplayer XBLA game called Plunder, which puts you in the role of a pirate. Could be a spinoff of Pimps at Sea, so I am skeptical of it being real.