A link of my suggestion, not noise-cancelling but still pretty darn good: [link] Sennheiser HD 201. Apparently available at Best Buy for $29.99 - my local stores have them.
I am completely happy with mine. The only complaint I've ever read about them is that their bass response isn't super-high, but I am not a high-volume, must-have-more-bass kind of guy and don't notice that. Some classical pieces feel just a tad underwhelming at the tympani zone, but I can fix it in software with my equalizer, and for my preferred brands of pop music I don't need to.
The also have a VERY long cord, which is sometimes awesome but also sometimes annoying. I keep a twist-tie with them for consolidation.
Here's the review that convinced me to try them: [link]
Here's the review of the Koss Porta-Pros by the same site (I liked these an awful lot too, possibly more than the 201s, and if I needed headphones more often I would buy another pair. B&M availability may be a problem though): [link]
ETA: Don't get the porta-pros confused with the sporta-pros, which are available at bestbuy. The sporta-pros are NOT the same headphone.
But with WebOS, I feel like the developer community is pricing itself right out of the market.
Since webOS is a dead platform the developers might feel it makes more sense to try to make whatever money they can now. I doubt there will be any infrastructure left to sell webOS software in a few years.
What is the official word on WebOS? Moving it to open source, and no more development?
These are the ones I bought on recommendation of ND--though they're earbuds, not over the ear, they are noise-canceling. I do like them on the plane.
Cool.
A year ago an Apple Store employee told me that noise-canceling earbuds did not exist. I'll have to try these.
dcp's recommendation are the ones I have as well. I couldn't fly without them. They are the bomb! I also use them in Starbucks.
The case they come in is a bit too bulky, so I have a mesh case with a hook so I hook them on to my briefcase.
I don't know the official word on webOS, but most of the original team either moved on a while ago or were laid off more recently.
I was reading "Pivot"? The app store for WebOS has a magazine, which is weird. And it includes some really lame assed fashion. But I think it said that HP was focussing on software not hardware. However, I'm sure a million things have changed since that was written.
Two CEO changes, if nothing else.
I could never figure out why HP bought Palm in the first place. Some of us had a theory it was just to scare Microsoft into knocking $0.50 off the licensing fee for Windows. Given how many Windows machines HP ships that would have paid for the acquisition in one year.
A long article on the downfall of Palm and WebOS: [link]