Stewie Griffin is set to appear in the season finale of forensic drama “Bones” this May 7th, under the guise of an hallucination experienced by David Boreanaz’s character, Seeley Booth. From Entertainment Weekly:Brennan will ask Booth to father her child, a request that leads to Stewie’s first of two appearances. “Stewie will be in the sperm donation room with Booth,” explains Nathan, who says Family Guy creator Seth MacFarlane will sign off on all of Stewie’s dialogue. “Whatever Seth wants to do is fine. As far as I’m concerned Stewie can sing!”