Like everyone else, I say the Camaro concept has a very nice 'rear' but the front, damn...IMHO, very bad design. I am no designer, but just my opinion and everyone else's that I've shown it too.
I actually hope they change it so it as I've always liked the Camaro (but did always prefer the Firebird design ...go Kitt!)
And as for the GT500, very nice. Saw the standard white w/ blue stripes, thought it looked quite slim with the blackend rock gaurds (panel under the doors, ground effects...not really sure what they're called).
You can see the Camaro here...scroll about half way down.
www.contriflux.com/2008_Challenger.html
R.