Pop Pop Thai Street Food is a small (maybe 6 or 7 tables) restaurant in a strip mall on Aurora Ave in Haller Lake.
I've been in a few times and really liked their food. They have some fairly uncommon Thai dishes, like Khao Man Gai (Thai Hainanese chicken) and braised pork leg with pickled mustard greens.
While they don't have the same level of finesse as Little Uncle, the dishes are prepared with care; the vegetables all taste really fresh. Really liked the pork leg, the khao man gai, and the papaya salad with salted crab. Definitely above-average Thai food, especially for this area of North Seattle.