British comedian Ricky Gervais insists he's not tempted to further his big screen acting career - because he finds it hard to concentrate on "serious roles". The Office funnyman admits he hasn't felt the lure of Hollywood since appearing in new movie NIGHT AT THE MUSEUM because he can't face having to adopt a different accent or wear fancy costumes. He says, "I'm never tempted to broaden my range. "It's difficult enough to concentrate on acting, let alone whether the accent is okay. "I'm English, that's it. I don't do accents and no wigs."