The Senn Momentums sure are getting popular around where I live!
Went downtown for one single class and saw 4 momentums and 2 on-ear versions in the span of an hour and a half.
Didn't recognize it, but it looked somewhat like a HD25-1 II Adidas except with square cups, no split headband and no protruding wires.
The amount of fake Beats at my high school is astounding. I would say it is safe to guess that less than half the beats I see are authentic. I have also seen lots of the Sony XB series, a few skull candy headphones, and I've seen a really low end pair of Sennheiser's before.