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Pierce Brosnan is an Irish actor, film producer and environmentalist who holds Irish and American citizenship. He was one of three voice actors for the Ultrahouse 3000, along with Dan Castellaneta and Matthew Perry. He supplied his own voice for the Ultrahouse's "Pierce Brosnan" option.
In addition to voicing the Ultrahouse, Brosnan appeared as himself in the closing sequence of "Treehouse of Horror XII," where he was apparently carjacked by the Leprechaun.