The Two Ways pub is a real Glasgow pub and it is the exact pub they filmed at least the external shots for every episode of the original 90's run of series, but it is not in Govan, it is in Finnieston at the top end of Argyle Street. It is now called 'The Brass Monkey'
Rab first appeared as a sketch in the show Naked Video. So popular was Rab, the producers gave him his own half hour special in 1989. A full series was later commissioned for 1990.
The show originally aired from 1989 until 1999 for 8 series. It returned in 2008 for a Christmas special and two more series, 9 and 10, in 2010 and 2011 respectively.
Elaine C. Smith (Mary) was pregnant during the filming of the pilot. Her pregnancy was written into the show however when the series returned the following year Mary was no longer pregnant and there was no new baby in the Nesbitt house.
The Nesbitt's house (exterior) was filmed at real location, No.87 Young Terrace, Springburn in Glasgow. (Note that this is a private residence)