AS Mrs Doyle in 'Father Ted', she often caused a stir but that was always in a tea cup.
Now Pauline McLynn has taken on her steamiest and most unholy role yet in TV's 'Shameless'.
The 47-year-old Irish star has even filmed nude scenes after being cast as Frank Gallagher's love interest, librarian Libby Croaker.
She said: "It's not exactly a part people have seen me play before.
"I was always handier as character old crones, I get to be someone my own age now and actually somebody's love interest.
"And I have to get my kit off because it's Shameless and sex with someone else, or something else, comes hand-in-hand with being on the Chatsworth estate."
The sex scenes are certainly further from 'Father Ted' than Manchester is from Craggy Island, where Mrs Doyle attended to 'Father Ted' and his sidekicks Dougal and Jack -- often employing her famous "ah go on, go on, go on, go on" catchphrase -- but Ms McLynn has thrown herself into the deed.
"There's a lot of shagging between Frank and Libby, as there is with the beginning of every relationship, and I did get naked.
"It doesn't bother me that people have clothes and underwear on during sex scenes but if it's a time when they should be naked then they should be naked, so I did get my kit off for the first time in my life . . . well, the first time for money," she said.
As well as playing Frank, David Threlfall directs certain 'Shameless' episodes too, including the one in which Libby and Frank sleep together for the first time. Ms McLynn said: "He was great, he talked me through all the shots but I found it very hard to concentrate on my lines with one of the top five actors between my legs."
The seventh series of 'Shameless' begins Tuesday, January 26, on Channel 4.