It's hard to believe it's been almost four years since BattleBlock Theater was first announced, but its release is getting closer, step by step. If you'd like to help The Behemoth put the finishing touches on it, they've opened up an application to their beta test, which should take place "somewhere between February and March".
Unlike your average "beta" test that's really more of a demo, The Behemoth really need you to, *gasp* TEST the game, and have set up a task list for testers to complete. If you're still interested, and meet the criteria below, sign up!
1. You must own a working Xbox 360 that has a reliable internet connection
2. You must have an active Xbox LIVE Gold account.
3. You must have an internet connection and a registered The Behemoth Forums account.
4. You must agree to the Terms and Conditions and Non-Disclosure Agreement.
(This will be a part of the registration form)
5. You must be willing and able to fulfill the Beta Testing Task List during the Beta testing period.
6. You must be at least 13 or older. Any applicants under the age of 18 must get prior consent by their parent or guardian and have the parent/guardian review all the Required Reading and Registration Form.
Source: Thebehemoth.com