Not much of a teaser this, is it? Unless there's some obscure British pop culture icon that also says "who ya gonna call?" we're somehow not aware of, it's pretty clear we'll soon be getting some Ghostbusters DLC for LBP.
Cuddly proton packs? Big-eyed slimer? The chance to create a level where Janine is brought together with her true love, Egon Spengler? We'd like all of those things. Those and the revelation that the "Sacktue of Liberty" can carry four sackboys in its head, and stomp around a level to Jackie Wilson.