Well, IMO, the 69 Camaro has the best body lines ever. It's a true classic like a 57 Chevy; you just can't go wrong. The 69 always gets a lot of press, go look at any old Hot Rod or Car Craft magazine from 10 or 15 years ago and you'll see there's an example in every issue.
It's always been popular for drag racing, and now that the g-machine culture is really taking off, the popularity is just carrying over.