(All times Eastern.)
Arrow (CW at 8) Felicity learns something new about Oliver.
Dancing With the Stars (ABC at 8) Semifinals.
The Voice (NBC at 8) First night of live playoffs.
Happy Together (CBS at 8:30) Cooper asks Jake and Claire how they met, and the two give varying accounts.
The Good Doctor (ABC at 10) Dr. Glassman deals with his treatment.
The Heart Guy (Acorn streaming) Season 3.
Mars (Nat Geo at 9) Season 2.
StarTalk with Neil deGrasse Tyson (Nat Geo at 11) Season 5.
China From Above (Smithsonian at 8) A four-part series combining human stories and aerial footage of the bustling country.
In Session Live with Dr. Jess (VH1 at 10) Radio host Charlamagne Tha God and psychiatric resident Dr. Jessica Clemons discuss mental health.
Daily Show/Noah (Comedy Central at 11) Jeffrey Wright.
Tonight Show/Fallon (NBC at 11:34) Jamie Foxx, Troye Sivan, Charli XCX.
Late Show/Colbert (CBS at 11:35) Hugh Jackman, Jeff Tweedy, U.S. Army Field Band’s Six-String Soldiers.
Jimmy Kimmel Live (ABC at 11:35) Jeff Bridges, S.E. Cupp, Midland.
Late Late Show/Corden (CBS at 12:37) Dan Folger, Family of the Year, Daphnique Springs.
Late Night/Meyers (NBC at 12:37) Kerry Washington, David Sedaris, Mamoudou Athie, Caitlin Kalafus.