Just saw a "breaking news" flasher on my TV for this.
Apparently, someone broke into the St. George, UT airport overnight and tried to joyride with one of the SkyWest planes. Sketchy details, but it sounds like they moved it on the ground, didn't make it into the air.
http://www.ksl.com/?nid=148&sid=2129...cid=featured-1
St. George is the home of SkyWest.
The local TV station just also posted a picture - looks like it was a CRJ-200. Sounds like it was driven from where it was parked into the passenger parking lot...