I have often said that ‘Goodnight Sweetheart’ only worked as the public had such great affection for ‘Rodney’. Well, that and the time-travel aspect. He (Gary Sparrow) was basically a liar and bigamist, he also became unbearably smug in the later series and treated his so-called best mate, Ron, terribly.
The very similar ‘Bliss’ starring Stephen Mangan was panned and sank without trace after one series.
I do wish the BBC had made another full series of GS after the return episode a few years ago. If only to see Gary get his comeuppance!