Only see TV sightings - mostly TV shows and interviews, someone on a news network like CNN, (Local news here, the anchor was wearing one - but I think it was off..which I guess makes sense)
I tend to notice watches since I am a big watch geek. Since June when I got mine, I have YET to see someone else in person - other than an Apple Store employee - wearing one.
i see them daily in china. i think the most i counted was about 15 in an hour one day in the summer, but that's not the norm. a couple each day.