A Question for the Class

I'm fixing to start a new writing project - a pilot.  I should write one every year, and I think I'm going to use the idea I came up with for tvrealm's Create a Show challenge for this year.

So here's my question: what do you look for in a pilot?  What are the things that get you to sit down a try out a new show?  What has to go right for you to tune in the next week?  What goes wrong that makes you decide to spend your time on something else?  What are your favorite pilots, and what did you love about them?  Conversely, what are your least favorite pilots, and what turned you off?