"TV & Video Auditions & Casting Calls"

First of all, EVERYTHING on television is scripted.
You do know that, don't you?... 

If you're not really sure, Backstage.com posts "reality" casting calls like this:

"Casting improv actors who have restaurant experience, or have been fired from a restaurant (i.e server, manager, chef, bartender, bus boy, etc.) for upcoming reality show on a major cable network."