Continuity mistake: When Phoebe kisses Gary, there's no lipstick mark on his cheek. But when he gets home, one has somehow appeared.
Goodnight Sweetheart (1993)
1 mistake in season 1 - chronological order
Ron Wheatcroft: You're hyperventilating, Gary. Put your head between your knees.
Gary Sparrow: What, so I can kiss my arse goodbye?