I was an extra for a couple of days during the making of Dirty Dancing (probably you have to be related to me to be able to find me in the movie). I was 17, and everything about the process was thrilling. I spoke with Patrick Swayze once, and he was as nice and good-natured as you'd hope he would be.
I actually still have the Kellerman's shirt I wore (you can see a shot of one at the beginning of the video). They let me keep it because it was stained at the bottom by my maroon shorts. I had gotten wet during filming, and the dye from my shorts came off on my shirt. That's kind of a clue about where I am in the movie, except I can't imagine it would help in the slightest. I'm also in the background of a scene with Wayne Knight (Newman from Seinfeld), whom I did chat with a bit. He talked about filming Ishtar, which would go on to become a "notorious failure," but things picked up for him after that.
Updated to add an old photo of me (and Ariana) for Margaret:
I am 25 in this photo, but me at 17 wasn't that different. Except that I think my hair was shorter, more Molly Ringwald-y:
Hope that helps?