Friday’s TV highlights

SERIES

Dog Whisperer: Cesar helps Rhona Mitra (“Boston Legal”) curb her bulldog’s violent tendencies, which first manifested themselves after a very ugly encounter with a pit bull, in this new episode (5 and 8 p.m. National Geographic).

School Pride: This new episode brings the pride team to Detroit, where the Communication and Media Arts High School, an institution with a proud tradition of student achievement, is slated to be closed because it is falling apart (8 p.m. NBC).

Smallville: During a Thanksgiving visit with Lois and Clark (Erica Durance, Tom Welling), Lois’ dad (Michael Ironside), reveals his dislike for superheroes and his efforts to pass a vigilante registration law in this new episode (8 p.m. KTLA).

Supernanny: In the season premiere Jo Frost faces one of her most challenging families yet — a blended clan that includes two teenagers (Mom’s), a 10-year-old (Dad’s) and two preschoolers (theirs) (8 p.m. ABC).

Supernatural: Dean (Jensen Ackles) begins to suspect there’s something about the brothers’ grandfather (Mitch Pileggi), that he’s not telling, but he has a hard time convincing Sam (Jared Padalecki) that anything is wrong in this new episode (9 p.m. KTLA).

Teach: Tony Danza: Two of his students cheat on a test and Tony chaperones the homecoming dance in this new episode. (10 p.m. A&E). The season finale follows at 11.

SPECIALS

What Not to Wear: Dressing Your Age: In this new special, Stacy London and Clinton Kelly look back at their series for memorable makeovers of the age-inappropriate kind (10 p.m. TLC).

SPORTS

Horse racing: Breeders’ Cup World Championships (1 p.m. ESPN2).

College football: Central Florida at Houston (5 p.m. ESPN2).

Hockey: The Pittsburgh Penguins visit the Ducks (7 p.m. KDOC).

Basketball: The Toronto Raptors visit the Lakers (7:30 p.m. FSN); the Clippers visit the Denver Nuggets (7:30 p.m. FS Prime).