1) “The Big Bang Theory,” 8:30 p.m., CBS. Next week, “Big Bang” starts rerunning its terrific, one-hour finale over two Mondays. To set that up, here’s an excellent rerun that highlights supporting characters: Leonard ‘s mom (Christine Baranski) visits, seeming suspiciously warm and nice. Also, Stuart (shown here with Denise) has finally overstayed his welcome at the home of Howard and Bernadette.
2) Reality competitions, 8 p.m., Fox and NBC. The end is fairly near now. “So You Think You Can Dance” (Fox) is down to six dancers and will dump two tonight. “American Ninja Warrior” is in its protracted finals, with two-hour episodes on four Mondays. This is the second one.
3) “Whose Line Is It Anyway?” 9 and 9:30 p.m., CW. So much for the notion of giving us something fresh and quirky. After exactly two weeks, CW has pulled the cheaply charming “I Ship It.” Instead, it doubles up on “Whose Line” — a rerun with Keegan-Michael Key and then a new episode with Jeff Davis. The good news? You can catch all six “I Ship It” episodes at www.cwseed.com.
4) “Grand Hotel,” 10:01 p.m., ABC. A week before the season-finale, crises continue. Alicia and Javi scramble to learn what really happened to their late mother. And their dad, the hotel owner, can’t extricate himself from the control of Mateo, who represents the mobsters he owes money to.
5) “The Love Big” (1968), 9:39 p.m. ET, Turner Classic Movies. A comedy about a Volkswagen with a mind of its own? The result is a Disney delight … something the studio rarely had in the 1960s. At 11:45 p.m. ET is the long version – almost three hours – of the long-forgotten musical “The Happiest Millionaire” (1967). You’ll also find Disney cartoons at 8 and 9:30 p.m. and 2:45 and 4:45 a.m.