Busy Philipps appears on the second season premiere of "The Mortified Ses sions" (10 p.m., Sundance). She played one of the most memorable characters on television's most-beloved canceled series, "Freaks and Geeks." She was Kim Kelly, a pretty but tough girl with a vulnerable side that made her all the more endearing.
Like the rest of the cast of "Freaks and Geeks," Philipps was a virtual unknown at the time. And like her cast mates -- including James Franco, Linda Cardellini, Seth Rogen and Jason Segel -- she has been anything but anonymous since. Phillips can now be seen in "Cougar Town" (moving soon to TBS).
For the uninitiated, "Mortified" host Dave Nadelberg sits down with well-known guests and their scrapbooks and memorabilia from childhood and adolescence. He asks them about youthful hopes and dreams, perceptions of the world and themselves, and when, if ever, they knew they were destined for their current careers.
When it works, "Mor tified" avoids the pitfalls of most talk shows, where guests are expected to offer glib remarks about their weekend before launching into obligatory plugs for the next movie, book or album. By keeping the focus on childhood embarrassments and mishaps, "Mortified" dwells in the awkward democracy of junior high school, a place where even those future celebrities felt miserable.
---For reasons of decorum and security, presidential appearances and state functions can seem choreographed and scripted. "Secret Serv ice Files: Protecting the President" (8 p.m., National Geographic) shows how scary things can get when state events get out of hand. Agents recall the chaos that threatened President Bill Clinton's life when he attended a state funeral in Morocco, surrounded by 2 million emotionally distraught bystanders. Or the time a riot broke out just before an address by President George H.W. Bush in Panama. And the time that a live grenade was thrown in the direction of George W. Bush when he visited Tbilisi, Georgia, in 2005.
---Viewers who can't get enough of the Travel Channel series "Airport 24/7: Miami" can loiter around New York's Kennedy Airport on "To Catch a Smuggler" (9 p.m., National Geographic). Real gluttons for aviation punishment can watch "Plane Crash" (9 p.m., Science). And for those who prefer vintage travel tragedies, there's the miniseries "Titanic: Blood and Steel" (8 p.m., Encore, TV-14).
---A honeymoon on hold on "90210" (8 p.m., CW, TV-14).
---Serena among grown-ups on "Gossip Girl" (9 p.m., CW, TV-14).
---An exotic animal figures in a gruesome case on "Bones" (8 p.m., Fox, TV-14).
---A new case is a familiar face to Grace on "The Mob Doctor" (9 p.m., Fox, TV-14).
---An apparent overdose on "Major Crimes" (9 p.m., TNT, TV-14).
---Nate keeps track of the group's movements on "Rev olution" (10 p.m., NBC, TV-14).
---"Anthony Bourdain: No Reservations" (9 p.m., Travel) takes a look at the seven deadly sins.
Medical students flirt with eternity in the absurdly moody 1990 thriller "Flatliners" (10 p.m., Style). A young cast includes Kiefer Sutherland, Julia Roberts, Kevin Bacon, William Baldwin and Oliver Platt. Yes, this is the Style Network.
---A nanny shortage has Barney's fingerprints all over it on "How I Met Your Mother" (8 p.m., CBS, TV-14).
---Shortstop envy on "Partners" (8:30 p.m., CBS, TV-14).
---A robbery on "2 Broke Girls" (9 p.m., CBS, TV-14).
---Bad wedding pictures on "Mike & Molly" (9:30 p.m., CBS, TV-14).
---Lost at sea on "Hawaii Five-0" (10 p.m., CBS, TV-14).
---A storage unit auction leads to murder on "Castle" (10 p.m., ABC, TV-14).
---Mitt Romney's sons, Rob Corddry and Shinedown appear on "Conan" (11 p.m., TBS, r).
---Jenny McCarthy, Brent Morin, Ingrid Haas and Matt Braunger are booked on "Chelsea Lately" (11 p.m., E!).
---Jack Hanna and Max Greenfield appear on "Late Show With David Letter man" (11:35 p.m., CBS).
---Jay Leno welcomes Arnold Schwarzenegger, Bubba Watson and the Wall-
flowers on "The Tonight Show" (11:35 p.m., NBC).
---Ben Affleck and Ben Howard appear on "Jimmy Kimmel Live" (midnight, ABC).
---Ben Affleck, Connie Britton, Cesar Millan and Sun Kil Moon visit "Late Night With Jimmy Fallon" (12:35 a.m., NBC).
---Craig Ferguson hosts Lisa Kudrow and Marc Maron on "The Late Late Show" (12:35 a.m., CBS).
Kevin McDonough can be reached at kevin.tvguy@g mail.com.