The top floor seating area of the Hungry Bear is one of my favorite places in all of DL, so yeah it's one of my favorite restaurants. My number ONE favorite is Cafe Orleans. I also love Plaza Inn for pasta and salad, and Riverbelle Terrace for breakfast (hello Mickey Mouse pancakes!). I have yet to eat at Carnation Cafe, but it's one that I really want to try.
As far as snacks go...Dole Whip, mint julep, churro. In that order.
I really don't have any attachment to any of the places in DCA, but I've been meaning to try Wine Country Trattoria and I look forward to trying the new restaurants.
If Downtown Disney counts, we love Ralph Brennan's Jazz Kitchen and eat there often.