TV highlights: Bill Hader, Seth Meyers and Fred Armisen's new mockumentary series kicks off with a 'Grey Gardens' spoof.

(All times Eastern.)"Boom!" (Fox at 8) contestants try to avoid being covered in sweet potato."Evocateur: The Morton Downey Jr. Movie" (CNN at 9) chronicles the life and career of the controversial singer, songwriter and 1980s TV personality.