There's nothing like a little downtempo trip hop to get you through the day, and the Atomica Project (formerly known as Atomica) puts out some good examples of the genre. I stumbled upon them via Dave's Lounge, and then purchased both their albums on eMusic.
If you like Portishead, you're probably going to like this:
While comparisons to other bands instantly surface, there's a plaintive undercurrent to vocalist Lauren Cheatham's performance that manages to cut through much of the ornamentation. Not to say that the instrumental aspect of the Atomica Project isn't good, but there's always a danger of overwhelming the listener with distorted effects when you form an electronica group like this. I feel a sense of patience from the Atomica Project's music - they let the vocals breathe instead of warping them and stretching them to fit a beat.