I've had a pair of Sennheiser HDR 120s for many years now. I adore them. They're not audiophile-level, but Sennheiser never disappoints.
Also, thank you to Woot for reminding me I had these. I'm gonna take these to work on Monday. I work in IT, so I can use them around the office whether I'm at my desk or in the back area working on PCs.
I also like that I can just drape them across my neck and use them as wireless speakers - you obviously lose a lot of sound quality with them that far from your ears, but it still works.