Good call Fuzz. Blizzard is way up there when talking about delays.
Polyphony is also one of the greater delay-developing-guys
I would also like to add Kojima Productions? The guys behind Metal Gear.
They seem to delay a lot also!
http://www.youtube.com/watch?v=iyLhpUPNPIs
360 IS OPERATIONAL AFTER 37 DAYS!