Random Start: Micah by Russian Circles

I found this band via Riley Breckenridge of Thrice in one of his Random Starts.  They're an instrumental (kind of) metal band.  Long songs, lots of movements within, complex rhythms.  It's good stuff and something that I've made an effort to like, but isn't really catching on with me.  I'll have to consider it background music for now.  It's the kind of thing you can really pay attention to, and dig for intricacies - or just have in the background as you're working.