I highly recommend this place! It's in Wheaton at Georgia and University but they also have a food truck that goes into DC--the schedule is on the site. This is more of a quick stop place to eat than a restaurant, but it's really hip and always has awesome music playing (retro alternative and maybe other genres too). The owners make the most amazing Bibimbap with various fusion-y twists and the ingredients are incredibly fresh and delicious (raw spinach, carrots, radish, daikon all mixed with rice and bulgogi or other stuff)--to me it's very west-coast. The pictures on the site give a good idea of the freshness. It's so delish I feel I have to spread the word.
http://www.seoulfooddc.com/