"Torchwood" is a spin-off of the BBC series "Dr. Who", which Barrowman co-starred in for a season. Barrowman has said in interviews that around the set, Tennant was known as David "Ten-inch" and that the two often engaged in bouts of competitive flatulence. (Sounds like a fun place to work.) Towards the end of the clip, Barrowman plants one on Russell T. Davies, creator of both series.
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