Monday’s TV Highlights: 'Regular Show' on Cartoon Network
Aftermath With William Shatner: The case of the Unabomber is revisited in the season finale (7 and 11 p.m. Biography).
MAD: Not to be confused with the long-canceled sketch comedy show, this new animated series spoofs pop culture in the humor magazine's signature style (8 p.m. Cartoon Network).
History Detectives: This series that seeks out the stories behind assorted artifacts ends its season (9 p.m. KCET).
Hoarders: The reality series about folks for whom too much stuff is never enough returns with two new installments (9 and 10 p.m. A&E).
Anthony Bourdain: No Reservations: This tasty travelogue marks its 100th episode and celebrates with a visit to Paris in back-to-back new episodes (9 and 10 p.m. Travel).
100 Greatest Artists of All Time: VH1 presents the first two installments of a new five-part countdown of the most important and influential music makers (10 and 11 p.m. VH1).
Thintervention With Jackie Warner: The fitness guru and former “Workout” star whips a new batch of clients into shape in this new realty series (10:15 p.m. Bravo).
Tom Reed's For Members Only: R&B legend Johnny Otis is saluted in this special (11 a.m. KSCI).
Giuliani’s 9/11: The former New York City mayor recalls that fateful day in this new special (6 and 9 p.m. Nat Geo); the similarly themed special “Witness: DC 9/11” follows at 7 and 10 p.m.
Nickelodeon Mega Music Fest: Justin Bieber, Colbie Caillat, the Roots and Wyclef Jean are among the musical acts featured in this new special (8 p.m. Nickelodeon).
Playtime: Jacques Tati directed and stars in this madcap 1967 romp around Paris (8:45 p.m. TCM).
Tennis: The U.S. Open continues in Flushing, N.Y. (8 and 9:30 a.m. CBS; 4 p.m. ESPN2).
Baseball: The Astros challenge the Cubs (11 a.m. WGN America); the Angels host the Indians (6 p.m. FSN); and the Dodgers visit the Padres (7 p.m. KCAL).
Photo credit: Cartoon Network