Del boys lingo has been documented for posterity here http://www.bbc.co.uk/comedy/onlyfools/lingo/euro.shtml

Got a lot from that and some from Eastenders. Managed to learn how to understand Geordie (and a few others) through too much "auf wiedersehen pet" :)

That's where I learned all my French.

Loved, still do, this program growing up.