7 p.m. on CW

Christmas Around the World Dean Cain and Laura McKenzie, pictured, host this new one-hour yuletide special that showcases how Christmas is celebrated around the world, by highlighting traditions that reach back into ancient times and extend into the modern day. That overview, not surprisingly, also extends to what various cultures have come to regard as “Christmas foods.”

7 p.m. on CMT

CMT a Tennessee

Kind of Christmas

A superstar lineup of country music greats including Amy Grant, Billy Ray Cyrus, Pam Tillis, Sara and Olivia Evans, Steve Wariner, Tracy Lawrence and Wynonna celebrate the Christmas season from several iconic venues and outdoor locations in and around Nashville, Tenn., in this new one-hour special. In addition to performing beloved songs of this festive season, the stars also share stories of their personal Christmas traditions and favorite holiday memories.

8 p.m. on SYFY

Intergalactic

After escaping into space, Ash (Savannah Steyn) finds herself given the cold shoulder by the rest of the crew over her perceived betrayal of Dr. Grieves. Meanwhile, Candy (Eleanor Tomlinson) is devastated over her mother’s death. After they are infected by a parasite that turns its victims temporarily into zombies, however, the crew is forced to set aside any differences and work together. Fortunately, Candy discovers Ash has a natural immunity to this threat, providing the key to a cure.

8 p.m. on TLC

Dr. Pimple Popper:

A Pimple Carol

With the holidays swiftly approaching, Dr. Sandra Lee is even busier than usual trying to help patients deal with any stubborn skin issues before they have to deal with seasonal parties and the associated selfies and group photos that are a part of the reveling. In this one-hour special, she also gets visits from the Ghosts of Pimples Past, Present and Future who may even be able to help with some new cases.