The one and only go-round I experienced was on a US 737-300 into DCA from the South. We got over the threshold and noticed we were a little high. Just as I said that, the engines were gunned, the plane pitched up, and we made our way back up. Being at the exit row window, the only thing going through my head was the 14th Street bridge. It was really odd, because it actually felt like the pilot was fighting to get the thing to climb and go back up, you could tell he was actually flying the plane. Needless to say, there was a plane at the far end of the runway who was taking his time clearing. We circled around and still landed 10 minutes early.