I'd imagine my tastes in current music skew a bit toward obscurity just by virtue of my total dissatisfaction with the mainstream right now. I like music that I find thought-provoking, like progressive rock; a lot of what's popular now just completely confuses and alienates me. As a result, I would expect a few of the artists in my collection to be unknown to my friends.
A few years ago, I got a copy of Porcupine Tree's The Sky Moves Sideways for Christmas. I had specified that I wanted the 2-disc expanded version, which meant my parents had to order it from the UK. When it arrived, I was quite happy to find that it had been sent out with an extra disc, which was a promotional sampler of other artists affiliated with the record label, Kscope. From that single disc I've been introduced to so many artists whom I would have otherwise never heard. Anathema is one example, although they appear to not be all that obscure; I may be in the minority, but I'm a bigger fan of their newer work (past couple of albums) than their doom-metal "classics" from the 90s. Porcupine Tree members Steven Wilson and Richard Barbieri also had solo work and side projects represented; I was instantly attracted to Wilson's solo music. There was an Engineers song, too, although that was actually not the first time I'd heard their music; I was somewhat familiar with them already from their contribution to the remix version of Bloc Party's Silent Alarm.
One of the projects represented on the sampler was Lunatic Soul. This was my first encounter with any of Mariusz Duda's music, and shortly afterward I also became a big fan of Riverside.
[youtube]http://www.youtube.com/watch?v=2hEapYZj1s8[/youtube]
Another artist on the sampler who I think bears mentioning was The Pineapple Thief. I'm only just starting to get deeper into their music now.
[youtube]http://www.youtube.com/watch?v=Tfir5JBuFrQ[/youtube]
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Mediocrity is a petty vice; aspiring to it is a grievous sin.