The 'megging' (male legging) is apparently becoming a hot new fashion trend for men. It started in Eastern Europe and the trend is starting to appear in New York. I don't know how most women feel about this, but I say YUCK. I can't imagine meggings would look appealingly masculine or even attractive on most men...
These leather ones look pretty good though..
And here are two styles available at Nordstrom.com that appear like they could look sexy on some guys;
Nordstrom calls them 'leggings'. See their selection here