Conversation so far:
When did Rob Brydon have a writing breakthrough?
In 2000 he made his mark in television comedy.
Was Rob Brydon successful in writing for television?
he co-wrote and performed the commercially successful Marion and Geoff for the BBC
what other writing did Rob Brydon do for television?
Human Remains, co-written by Julia Davis
Anything else interesting on Rob Brydon besides writing for television?
Since these series Brydon has developed a career path as a character actor, in both comedic and serious roles.
what did Rob Brydon act in?
He portrayed controversial theatre critic Kenneth Tynan in the BBC Four film Kenneth Tynan: In Praise of Hardcore (2005)
did Rob Brydon act in anything else besides Kenneth Tynan?
His character Bryn West in Gavin & Stacey, written by Ruth Jones and James Corden, allowed him to return to his South Wales roots.
Did Rob Brydon win any awards for acting?
In the 2009 BAFTAs Rob Brydon was nominated for Best Comedy Performance as Bryn.

Question: What was his most successful act?
Self-contained rewrite: What was Rob Brydon's most successful act?