 In addition to the regular cast , the episode also guest starred actress Drew Barrymore , voice actor H. Jon Benjamin , actor David Boreanaz , actress Karley Scott Collins , actress Carrie Fisher , actor Ron MacFarlane , father of series creator and executive producer Seth MacFarlane , actor Bruce McGill , voice actor Will Ryan , voice actress Tara Strong and actress Nana Visitor . Recurring guest voice actors John G. Brennan , actor Chris Cox , actor Ralph Garman , writer Chris Sheridan , writer Danny Smith , writer Alec Sulkin , actress Jennifer Tilly and writer John Viener also made minor appearances . 
