Easter Egg in Arkham Asylum

Building a Better Gotham:

A very hidden away room was announced via podcast not too long ago, disclosing the location of a super secret room that the developers put in that gave some hints away about the sequel. It's a secret Warden's Office, very nifty, and very cool to have something like this pop up to further fuel the desire for the ever-so-cool-looking sequel.

The room does not appear on the map or in detective mode, so here's a video explaining how to blow the sucker wide open so, you too, can explore this neat little treat: