I've had 3. The most recent was flying into DEN with tstorms in the area. We were probably 500ft or so from touchdown when we gunned it, and went in back up. Pilot came on and said he got a windshear warning and went around. Circled for about 20 minutes then went in and landed on a different runway uneventfully.
The more interesting time was way back in 1997 coming into SFO on an a320. We were just over the piers landing on the 28's and up we went. Pilot came on and said a plane taking of on the 1's perpendicular to us took his sweet time starting his takeoff roll so we went around. When we came around again, up we went again for a second time. This time people were a bit unnerved. The pilot comes on again and said- in an annoyed voice- that the same thing happened again and that it's the first time he's had a double go-around in his career. We finally landed the third time.