I had no idea that so many of the raptor effects in JP1 were a practical suit! This is a cool video, and showed that Stan Winston's team were THE best when it came to effects like this. I'm such an old-school effects nerd.
http://www.youtube.com/watch?feature=player_embedded&v=jAzQr3Ml0UI# (http://www.youtube.com/watch?feature=player_embedded&v=jAzQr3Ml0UI#)!
So that's how they did it.
That would make an awesome Halloween costume!