Is this long running characters or just those who made an impact eg not necessarily the lead character in a show

I would agree re Del Boy though Only Fools also gave us the legendary characters of Trigger and Boycie, both contenders too if you ask me.

One guy that always got me was Reg Holdsworth in Coronation Street , pure comedy gold in every scene he was in. This is the only time I have ever watched a British soap and he was the reason I started watching it - I stopped when he left.

Keith from The Office was also brilliant - though his total screen time in the whole two series probably came to no more than 5 minutes.

I find it difficult to choose an out and out winner - Alan Partridge belongs with comedy characters so wouldn't count here, though he did have his own series I guess. But him aside it's tough...

Others that spring to mind - JR, BA Baracus, David Addison, Rigsby....!