Mine had 173 miles on it. But I wasn't going to complain because it was the only one in the area with the options I wanted (and that was way back in February). I told them 5spd, ABS, Moonroof, and Laser Blue. I ended up with Leather as well, which was well worth it.
The warrantee takes into account the 173 miles so if something happens at 100,172 miles in less than 6 years, I'm covered (yes I opted for the extended warrantee...I don't plan on paying for repairs and I've already got 18,000 miles on it)
Those miles were most likely from moving the car between dealerships and maybe a couple employees taking the car out on their lunch break. Its nothing that you won't do in the first day or two you own the car. Just make sure you look over the car very carefully for parking lot dings...the bumpers, the doors, etc. Mine had a dent in the rear hatch when I went to pick it up...I made them fix it.