This is a great topic for discussion, cause that's one thing I've had to be careful of since getting interested in headphones a few months ago. I can enjoy the type of boomy, deep, impressive bass that can really be fun with movies, but when it comes to music I'm not into that at all. I've seen a lot of threads on here where people talk about how this headphone or that one doesn't have enough bass, but what they're really wanting more of is an artificial low end "noise". My main speakers at home are Magnepan 3.6s, which are huge planar panels that can play down into the low 30s. Planar bass is very clean, crisp, and articulate and it'smore consistent with what you'd hear in a live setting from instruments and vocals that live in the low end. The bass I like is the kind that rounds out the bottom end of the overall presentation, not the sort that stands out like a sore thumb and takes over the music. Not that there is anything WRONG with that, it's just that I think on a forum like this where you have bass-heads and audiophiles alike, it's important to distinguish what you're after.
For example, the bass is one of the aspects of the Grado SR80is that I fell for immediately. It doesn't reach real low, but it's very well articulated and it sounds very natural to me. When I recently jumped up in the line a bit to the 325s, that quality remained except it was more of a good thing. A lot of people would say the Grado Prestige line doesn't have any bass at all, given what they're after. Recently there was a thread on here where someone was after bassier heaphones, and the consensus was that he should pick up some Denon 2000s. I've not heard those cans, but from what I understand they are, like the Grados, very well articulated in the low end and offer excellent, natural bass reproduction. But the OP of that thread wasn't happy at all with the bass he heard, cause he was after something different. He wanted bass that was closer to what you'd get with Beats, so even though the Denons have a stellar rep here, he just wasn't able to find what he was looking for.
There are headphones for just about any type of listening preference, but it's how each person defines what they're after that can make all the difference in threads like this.