Highlights of the special guest stars and events the networks have planned for the second week of the November sweeps month:
Monday, Nov. 9
How I Met Your Mother (CBS)
Ted, Marshall and Lily work together to get Barney and Robin to break up. Alan Thicke guest-stars as himself.
One Tree Hill (CW)
In an episode directed by series star Sophia Bush, devastating news threatens to derail Brooke and Julian's fairy-tale romance. Millie's downward spiral jeopardizes her relationship, her job and her life.
Gossip Girl (CW)
Leighton Meester's new single "Somebody to Love" (with Robin Thicke) is featured in the episode. All-girl rock band Plastiscines perform.
CSI: Miami (CBS)
In the first part of a three-series CSI crossover, Dr. Ray Langston (Laurence Fishburne) comes to Miami when a severed leg found in the Everglades is discovered to belong to a girl who went missing in Las Vegas a week earlier.
Tuesday, Nov. 10
A North Korean assassin resurfaces in Washington. Kelly Hu (X2: X-Men United) guest-stars.
Wednesday, Nov. 11
Gary Unmarried (CBS)
Allison's new friend (guest star Nadine Valezquez, My Name is Earl) prefers Gary's company over hers.
Criminal Minds (CBS)
Rock star Gavin Rossdale guest-stars as a musician whose frightening alter ego, who might be a serial killer, subsumes him.
CSI: NY (CBS)
Langston rushes to New York where further clues link up to a case in Miami. Part two of the three-part CSI crossover.
Thursday, Nov. 12
Ugly Betty (TV Guide Network)
Daniel hires his new BFF Natalie (guest star Jamie-Lynn Sigler) as his assistant. Nico (Yaya DaCosta) reveals her secret.
Stephen Fry returns as Dr. Gordon Wyatt. Booth has to be re-certified for FBI marksmanship before he and Brennan investigate the death of a little person who was a former wrestling star.
The Vampire Diaries (CW)
A new history teacher (guest star Matt Davis, Legally Blonde) arrives in Mystic Falls. Elena, Bonnie and Caroline hold a séance. Damon reveals why he has returned to Mystic Falls.
CSI: Crime Scene Investigation (CBS)
In the conclusion of the three-part crossover, Langston's investigation leads him to a prostitution ring in Las Vegas.
Grey's Anatomy (ABC)
Owen recruits fellow Iraqi War vet Dr. Teddy Altman (Kim Raver, 24 and Lipstick Jungle) as a new cardiothoracic surgeon. Izzie returns with her high school mentor (guest star Joel Grey).
Super-fan Becky (guest star Emily Perkins) tricks Sam and Dean into attending a Supernatural fan convention.
Friday, Nov. 13
Wonder Twins Zan (guest star David Gallagher) and Jayna (guest star Allison Scagliotti) show up in Metropolis.
Ugly Betty (ABC)
Betty's schoolgirl crush (guest star Adam Rodriguez) makes both Suarez sisters question falling for nice guys. Daniel introduces Amanda to the Community of the Phoenix, as he's lured deeper into its clutches by Bennett (guest star Dylan Baker) and Natalie (guest star Jamie-Lynn Sigler). Watch an encore of this episode on the TV Guide Network on Thursday, Nov. 19 at 7/6c.
Agent Ian Edgerton (Lou Diamond Phillips) becomes a murder suspect.
Sunday, Nov. 15
Extreme Makeover: Home Edition (ABC)
David Duchovny is this week's celebrity volunteer when the team builds a house for a leukemia survivor.
Three Rivers (CBS)
Mandy Patinkin guest-stars as a crash victim dying from ALS who asks to be taken off life support so his organs can be used to save others.
Brothers & Sisters (ABC)
Nora has a secret crush on a younger man (guest star Jon Tenney)