Hi all, I'm looking for some (hopefully inexpensive) headphones. I want a pair for my iMac (I don't have an iPod). Not necessarily lightweight, as they'll just sit on my shelf when I'm not using them. Of course, they need to have respectable sound and be comfortable to wear. The TV is about 6 feet from my desk so it becomes frustrating for me to use iMovie, and intrusive for my wife if I play music. Does anyone have experience with a good pair of headphones that cut out external sound (without turning the volume up full blast, I mean!)? I don't want the TV to drown out the quiet audio of iMovies. I'm guessing the Walkman type wouldn't cut it. For iMovie and MP3s I guess I don't need a professional pair. If I can buy a good pair from the Apple store online it would be great. Thanks for any advice!