Sesame Street: The long-running educational program for young children returns for another season (7 a.m. KCET; 8 a.m. KLCS; 10 a.m. KVCR).
Top Gear: This car-crazy show rolls into a new season (6, 7:20 and 8:40 p.m. BBC America).
Ancient X-Files: Unsolved mysteries from way, way back in the day are explored in this new series (6, 7, 9 and 10 p.m. National Geographic).
The Last Word With Lawrence O'Donnell: The political commentator gets his own cable show (7 and 10 p.m. MSNBC).
When Worlds Collide: The meeting and then merging of Spanish and indigenous cultures in the Americas are examined in this new documentary (9 p.m. KCET).