"Wake Up Exhausted" by Alkaline Trio (featuring Tegan from Tegan and Sara)

I'm not really a huge fan of either band (though Crimson by AT is one of my favorite albums ever), but I think this is an absolutely awesome team-up. It's cool to see bands going outside of their comfort zone like this.
On a side note, Tegan makes me wish I was a hot girl, so she'd be interested in me.