Special Guest Stars Dean Winters as Dennis Duffy James Marsden as Criss Chros Guest Stars Chris Parnell as Dr. Leo Spaceman Melissa McMeekin as Megan Duffy Adrienne C. Moore as Shanice Tony Bennett as Himself John Hodgman as Terry Ashlie Atkinson as Theresa Adriana DeMeo as Jenessica Michael Sgalambro as Ken Bill Charlap as Pianist Co Starring Marcella Roy as Young Liz Marisa Redanty as State Official Justiin A. Davis as Guy #2 Tommy McKiernan as Guy #1 Uncredited Jeremy Brena as Groom