Actor Daniel Gillies really wants to direct a movie and promises himself that he won’t take another acting job until he accomplishes his goal. The documentary “Kingdom Come” (Showtime at 7 p.m.) chronicles his journey creating and financing his independent film and features interviews with others who have faced the same challenges.

FINALE WATCH: “Arrow” (CW at 8) Status: Renewed. This superhero drama kicked off its freshman season with huge numbers (thanks to the many shirtless scenes from the title character?), thrilling the CW, which gave it an early renewal. In the finale, it’s up to Oliver and Diggle to stop the Dark Archer’s revenge scheme, and later, Oliver makes a confession about Laurel, putting his already-dicey relationship with Tommy in jeopardy.

The final two singers — Candice Glover and Kree Harrison — battle it out on “American Idol” (Fox at 8), and the winner will be crowned in Thursday’s finale.

FINALE WATCH: “Supernatural” (CW at 9) Status: Renewed. The long-running series shows no signs of slowing down in the Season 8 finale as Sam and Dean are cornered when Crowley is poised to take away all the good things the brothers have accomplished as hunters.

FINALE WATCH: “CSI” (CBS at 10) Status: Renewed. The original series wraps up Season 13 with a guest appearance from Black Sabbath (Ozzy Osbourne, Tony Iommi and Geezer Butler), as the group performs a new song at a show attended by Ted Danson’s character. Meanwhile, after the concert, the team investigates a scary trail of murders with details that echo sins from Dante’s “Inferno.”

Avery has been his own worst enemy as he’s gone down in flames this season, choosing money and fame over friends and family on “Nashville” (ABC at 10), but he finally catches a break that could boost his career.

Shawn and Gus are devastated when their favorite DJ is found dead on “Psych” (USA at 10), so they go undercover at his former radio station to investigate.

The three real estate agents are all tested by the impact of Hurricane Sandy and scramble to get their businesses back on track on “Million Dollar Listing New York” (Bravo at 10).

Actor Ed Helms and Hoda Kotb of “Today” are on “The Late Show With David Letterman” (CBS at 11:35), along with country singer Brad Paisley.

Singer Usher, actor Nick Offerman and musical guest Pyramids visit “The Tonight Show With Jay Leno” (NBC at 11:35).

Jason Collins, the NBA player who became the first active male athlete in a major U.S. professional sports league to come out as gay, appears on “Jimmy Kimmel Live” (ABC at 11:35) with his brother, Jarron Collins. Other guests include J.J. Abrams and Huey Lewis and the News.

— Emily Yahr