I let Michael borrow my camera last weekend when he went on a desert field trip for school. He brought me back a picture of some grasshoppers I've never seen before. I looked through 100 pages of BugGuide grasshoppers before deciding to call it a night. (they have over 200 pages of grasshoppers!) I'll update with an ID when I get one.
I now know these are Bootettix argentatus - Creosote Bush Grasshoppers.