It's some sort of cricket? Some friends and I saw one these at Devil's Tower this summer past. It had a strongly and brightly striped back end like this...

its called a jerusalem cricket. they get to be a pretty good size

Jeepers creepers, it's a Jerusalem Cricket, all right! Nice helmet, and feelers...

A pic of a Jerusalem Cricket that I took in Zion in late August this year. He was a big one! Submitted By: Dirty Gri Gri, or is it GiGi? on Oct 31, 2010

Yup, and they bite.
I also have heard that they cook up pretty good too?!

Yep. I thought that's what it might be. Creepy! Nice shot Gigi!

Thanks, Blitzo! He was a big one- EEEK!