Just a recommendation to some people here looking for over ear headphones; I just got a pair of the Philips Citiscape Uptowns new for under $80 and these things are amazing.
I don't know if you guys regularly endorse them as much as the Audio Technica M50s but damn, these things sound great. A bit better than the M50s in my opinion, actually. Everything feels more balanced. The M50s have a bit of a punchy bass that sometimes overpowers everything else but these are some of the most neutral headphones I've ever listened to.
Only downsides would be that they're a little quiet on an iPod (regular computer/other audio source seems to blast them just fine), the little volume slider thing is pretty much useless and the burn-in time is a little long. Right out of the box, they sounded awful. Like, no better than my pair of $10 earbuds. But after leaving them on for a few hours, the sound is quite impressive. And to top it off, I've yet to find a genre they lack in. Rap, dance, rock, metal, opera, jazz, house, pop, or whatever all sound really great so far.
Wholeheartedly recommend these to anyone looking :)