TV Today

Live With Regis and Kelly

(9-10 a.m., 6ABC) - Guest cohost Bryant Gumbel; actress Julianne Moore (

Next

); the latest

American Idol

castoff performs; celebrity look-alikes.

The View (11 a.m.-noon, 6ABC) - Celebrity Joan Rivers; Neil Sedaka performs.

Martha (11 a.m.-noon, NBC10) - TV newsman Matt Lauer (Today) prepares a simple supper.

The Ellen DeGeneres Show (3-4 p.m., NBC10) - Actress Julia Louis-Dreyfus (The New Adventures of Old Christine); actress Laura Dern (Year of the Dog); American Idol castoff.

How I Met Your Mother (8-8:30 p.m., CBS3) - If you're Canadian and easily offended by Americans making fun of your country, skip this. The rest of you can stick around and enjoy one of the season's funniest episodes. Barney (Neil Patrick Harris) learns why Robin (Cobie Smulders) hates shopping malls; he has the evidence on a video he can't wait to share with the rest of the gang. It's not all Canada jokes, though; 1980s fashion is the butt of a few choice gags as well.

American Experience (9-10 p.m., WHYY TV12) - "Are you going to San Francisco? Be sure to wear some flowers in your hair." The summer of 1967 brought thousands of teens and young adults to San Francisco. But as the new episode "Summer of Love" reveals, contrary to the song, it wasn't all a "love-in there." And by 1968, the culture of drugs and doing one's own thing was showing its dark side. Residents, police, politicians and former flower children weigh in on their experiences.

Late Show With David Letterman (11:35 p.m.-12:35 a.m., CBS3) - Journalist Brian Williams; a Top 10 list presented by former American Idol contestant Sanjaya Malakar; comic Steven Wright.

The Tonight Show With Jay Leno (11:35 p.m.-12:35 a.m., NBC10) - Actor Zach Braff; college basketball coach Pat Summitt; Joss Stone performs.

Jimmy Kimmel Live (12:05-1:05 a.m., 6ABC) - Actor Kurt Russell; actress Rachael Harris; Elliott Yamin performs.

The Late Late Show With Craig Ferguson (12:35-1:35 a.m., CBS3) - TV personality Mary Hart; football player Brady Quinn; the Exies perform.

Late Night With Conan O'Brien (12:35-1:35 a.m., NBC10) - Actress Hilary Swank; comic Artie Lange; the Black Keys perform.