I went to the new Five Guys at 14th and Irving last week. The verdict - tasty. It took awhile to get my burger, about 10 minutes, but it was good when I got it. However, another lady who had been in line said something like "I asked for no mayo!" when we were walking down the street.
They also have the signature free peanuts, though they're off to the side and kind of hidden. But the burger was good, fries were tasty, and the bag was nice and greasy. I wonder if Columbia Heights waistlines are going to start expanding.