MICHAEL Fassbender is being big-headed on the set of his latest film.
The Killarney actor was wearing a fibre-glass head during filming outside Enniskerry, Co Wicklow.
The cast and crew of 'Frank' arrived in Ireland this week after two weeks shooting in New Mexico.
"The character Michael plays is agoraphobic, he wears a fake head so he can take his room with him whenever he goes outside," revealed the producer of the film, Ed Guiney.
Comedian Pat Shortt, who stole the show in 'Father Ted' with his crazy cameos, had a walk-on part in the €6m-budget movie yesterday.
The 'I Shot JR T-shirt' may have gone, but his contribution was every bit as deranged, when he fought actor Domhnall Gleeson.
"We were delighted to have Pat in our film but he's only in one scene, where the band meet him on the way to the studio where they are working in Ireland," said Mr Guiney.