'Supergirl' on Monday kicks off a heroic week of crossovers on the CW

There haven't been this many A-list heroes in one place on television since the nascent Justice League episodes of Smallville. But a super week is upon us with the much-anticipated crossover episodes in the CW's Arrow-verse finally come to light.

First, Barry Allen shows up seeking help on Supergirl on Monday at 7 p.m. Aliens have landed on his Earth and he needs her to help stop the takeover.

They take the action to The Flash, on Tuesday at 7 p.m. Then Oliver Queen has to deal with some timeline fallout on the 100th episode of Arrow, on Wednesday at 7.

Almost lost in all the hoopla is that this could be considered a four-night event. The heroes from DC's Legends of Tomorrow, borne of one of the Arrow/Flash crossovers, will play a big part leading up to its show on Thursday at 7.

The much-anticipated crossover had a starring role in fans' dreams, perhaps even more than the appearance earlier this season of Superman. At this rate, there'll be no need for fan fiction. Fans will just be able to turn to the CW and let it ride.

At least until after the Supergirl-Flash musical crossover.

The rest of the week

SUNDAY

Soul Train Awards: Dallasite Erykah Badu returns as host. 7 p.m. Centric and BET.

Bob's Burgers: One can only imagine what the set list will be when Linda decides that the family should go caroling. 7:30 p.m. Fox

The Walking Dead: Oh, Negan, always threatening people. 8 p.m. AMC

MONDAY

CMA Country Christmas: The concert event special will feature Idina Menzel and others. Jennifer Nettles hosts. 7 p.m. ABC

Startalk: Neil deGrasse Tyson talks shop with Apollo 11 astronaut Buzz Aldrin and comic Iliza Shlesinger.

TUESDAY

The Voice: The numbers just keep dwindling. 7 p.m. NBC

Rudolph the Red-Nosed Reindeer: Yeah ... Santa comes around, but only after Rudolph pulls off the impossible. Hey, Rudolph? Forgive, but never forget. 7 p.m. CBS

WEDNESDAY

Empire: As promised, Phylicia Rashad as the mother of Taye Diggs. This show just keeps giving the people what they want. But is it all a distraction so we won't wonder what Andre is really up to after hacking the company? 8 p.m. Fox

Little Women: Dallas: As long as Asta, Caylea and-or Emily is involved, I'm in. 9 p.m.

Vikings: Does anyone want to be king in the midseason premiere? 8 p.m. History

Queen Sugar: The three siblings end the season near where it began: trying to save the farm. 9 p.m. OWN

Christmas in Rockefeller Center: Many of the Today show crew will host as the tree -- and stars such as Tony Bennett, Dolly Parton, Garth Brooks and Trisha Yearwood -- lights up the night. 7 p.m. NBC

THURSDAY

Top Chef: It's the season premiere, and this time, half of the contestants have done it all before. 9 p.m. Bravo

The Great American Baking Show: It's a perfect day for a season premiere of a show about baking. Nia Vardalos hosts the two-hour opener. 8 p.m. ABC

FRIDAY

Lost in Oz: The animated series spins off with 12-year-old Dorothy Gale and her dog taken to a new land. Amazon.

I Love Lucy Christmas Special: Two episodes, my dears. You're welcome. 7 p.m. CBS

SATURDAY

The Parent Trap and Mean Girls: In both films, Lindsay Lohan plays a girl who's just trying to fit in. 6 and 8 p.m. MTV

Out this week in home entertainment

Pete's Dragon is a remake of the 1977 film. Bryce Dallas Howard and Robert Redford star in the Disney film about a young boy who lives in the forest with his best friend Elliott, a dragon.

Also out this week: Absolutely Fabulous: The Movie; The BFG; Doctor Who: Monsters Collection; Don't Breathe; House of Lies: The Final Season; Martin: Seasons 1-5; Marvel's Avengers 2-Movie Collection; T.A.M.I. Show/The Big TNT Show; and The Wild Life.

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