This season featured guest appearances from Julie Bowen, Hank Azaria, H. Jon Benjamin, Dan Castellaneta, Nancy Cartwright, Julie Kavner, Jeff Bergman, Yeardley Smith, Kevin Michael Richardson, Maya Rudolph, Mason Cook, Jonathan Morgan Heit, John Viener, Patrick Warburton, Chris Cox (voice actor), Adam West, Lucas Grabeel, Emily Osment, Dee Bradley Baker, Ana Gasteyer, Gary Cole, Fred Tatasciore, Nat Faxon, Max Charles, Harvey Fierstein, Jennifer Tilly, Chris Hardwick, T.J. Miller, Phil LaMarr, Liam Neeson, and André Sogliuzzo.