John Austin O'Callaghan is a stage, film and television actor known for his appearances in We Were The Mulvaney's, The Agency, Stargate: Atlantis, and Haven't We Met Before
| Episode |
Stargate Atlantis The Return (2) |
2007 |
| Episode |
Stargate Atlantis Progeny |
2006 |
| Episode |
Stargate Atlantis The Real World |
2006 |
| Episode |
The Agency Elite Meat to Eat |
2002 |
| Episode |
The Beer Frontier American Pale Ales |
2010 |
| Episode |
Once a Thief Shaken Not Stirred |
1998 |
