APPS are a great addition to any Facebook Business Page. You've often hear "There's an APP for that" in relaation to smart phones, but it is a great tactict for Facebook custom tabs too.
Some options are:
-Sweepstakes - Creating a custom tab for a Giveaway or Enter to Win is a great fan attractor.
- -Photo Showcase- Have a lot of photos that showcase your location, venue, product? Add a Photo tab for that.
- -Video Channel- Have a lot of video that showcases your product or service? Add a Video tab for that.
- -E-mail Signup- Grow your Email database with a custom email signup to receive specials and offers.
-Twitter Fee- Cross sell your social by integrating a Twitter feed within your Facebook presence
-Fan Exclusive- This is a great way to reward your loyal fans by offering a tab with an exclusive just for Facebook fans.
-Donations- This is a great way to increase funds for your organization, non-profit, etc.
These are just a few examples of Custom APPs that can be created and added to your Facebook page.