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Randy Harrison ('Queer as folk') auditioned for two roles on the show, but was deemed too old for the role of Patrick, and not old enough for the role of Dom.

Russell Tovey originally auditioned for the role of Patrick, but was unsuccessful. After the show got picked up, the character of Kevin was written with him in mind.

The character of Doris was originally a recurring role, but everyone on the team liked Lauren Weedman's performance so much that she became a full time regular during the second season.