All the tube news that’s fit to surf …

- In the wake of Walter Cronkite’s death, who’s now America’s most trusted newsman? A Time.com poll says it’s Jon Stewart.

- Speaking of Cronkite, the Discovery Channel is airing the news legend’s eight-part documentary on the 20th century, Cronkite Remembers, this Sunday.

- Nip/Tuck star Joely Richardson will play Henry VIII’s last wife, Catherine Parr, on the upcoming final season of Showtime’s The Tudors.

- Comedy Central is planning a straight-to-DVD movie version of its politically incorrect (to put it mildly) ‘toon Drawn Together.

- What’s wrong with kiddie beauty pageants? Check out a clip from last night’s Toddlers & Tiaras season premiere, in which a four-year-old describes her mom’s talking hands as her best friends. Really, just watch it.

- The Jay Leno Show will have a different director than Leno’s Tonight Show, and the new helmer is an old Conan O’Brien director. BTW, “Stuttering” John Melendez will be a part of Leno’s new primetime show, but as a writer instead of an announcer. The official Website for the comedian’s new show is up on NBC.com, where fans can watch The Jay Leno Show set being constructed.

- The Bio Channel is premiering new TV-related Biography episodes in August, including installments on Family Ties, Roseanne and Three’s Company.

- TV Guide.com’s complete guide to Comic Con just makes me regret not planning a trip to the San Diego event this year … so many great TV happenings there.

- There’s a great line-up for HBO’s special on the 25th anniversary celebration for the Rock & Roll Hall of Fame, including Eric Clapton, Bruce Springsteen, U2, Stevie Wonder, Metallica, Simon and Garfunkel and Aretha Franklin. Just one quibble: Since the Rock Hall of Fame is in Cleveland, couldn’t organizers have planned the event for that city, which could certainly use the potential influx of tourist cash the concert would bring, instead of Madison Square Garden?

- And tonight in primetime:

- Sadly, it’s officially the end of the road for Samantha Who? (8PM ET, ABC), as back-to-back episodes make up the series finale
- Prepare for next week’s Real Housewives of Atlanta season premiere with a look at The Real Housewives of Atlanta: Lost Footage special on Bravo (8:30PM)
- The rumors were true, and Katie Holmes performs on the 100th episode of So You Think You Can Dance (9PM, Fox)
- On She’s Got the Look (9PM, TV Land), the contestants have to test their TV hostess skills
- It’s night four of the Torchwood: Children of Earth miniseries (9PM, BBC America)
- Michael helps save a boy from his abusive stepfather on Burn Notice (9PM, USA)
- Dr. Drew Pinsky hosts 16 & Pregnant: Life After Labor (10PM, MTV), which reunites all the teen mamas from the first season
- Hank has a patient whose serious injuries aren’t evident at first on Royal Pains (10PM, USA)
- Kat heads to NYC to promote her cosmetics line on LA Ink (10PM, TLC)
- There’s a new episode of Most Popular on WE (10PM)
- A winner is chosen on The Fashion Show season finale (10PM, Bravo)
- And Emily celebrates her move to Vegas in the season finale of Southern Belles: Louisville (10PM, SoapNet)