“Dancing With The Stars”: OK, so they were pretty darn good on frozen water, but how will Olympic ice dancing champs Charlie White and Meryl Davis fare without their skates — and each other — as they compete separately in the ballroom? That’s one of the key questions going into the 18th season of this sequin-studded reality show. 8 p.m., Channel 4
It’s a “Glee”-ful milestone as the musical drama airs its 100th episode. Joining the celebration are Gwyneth Paltrow and Kristin Chenoweth, along with original gleeks Mercedes (Amber Riley), Quinn (Dianna Agron) and Brittany (Heather Morris). 8 p.m., Channel 13.
“The 100” is a sci-fi saga that follows 100 teens who have been freed from a space station prison, but with a catch: They must go explore Earth, which was pretty much fried during a nuclear holocaust. 9 p.m., Channel 11.
Eighth grade has proved to be quite a challenge for Max (Max Burkholder) on “Parenthood.” Tonight, some bullying during a school field trip pushes him over the edge. 10 p.m., NBC.
“Whose Line Is It Anyway?” kicks off a new season of playful goofiness. Joining the fun in the opener is Kat Graham (“The Vampire Diaries”). 8 p.m., Channel 11.
The fantastical drama “Da Vinci’s Demons” may draw groans from history buffs, but the fans eat it up. 9 p.m. Starz.
McClatchy News Service