Adolescent acne angst is ‘Beauty and the Zit’ on Showtime; Christmas comes early to Disney

A wealthy Beverly Hills housewife leads her daughter’s Girl Scout troop on a wilderness trip in Troop Beverly Hills (TBS, Sunday at 7:35 a.m.). Shelley Long, Craig T. Nelson and Betty Thomas star in the 1989 comedy. For ages 8 to 17.

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Eric Johansson (Michael Yarmush) discovers a pimple on his face right before the school dance in “Beauty and the Zit,” an episode of My Life as a Dog (Showtime, Sunday at 10 a.m.). To save himself from “imminent social annihilation,” 11-year-old Eric seeks the help of a cosmetologist. For ages 8 to 14.

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In an all-day presentation of holiday movies and cartoons, the Disney Channel brings viewers “Christmas in July” (from 10 a.m. to 1:25 a.m.). The viewing ranges from “Rudolph and Frosty’s Christmas in July” to “The Honeymooners’ First Christmas.” For the family.

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Ricky’s (James Marsden) life falls apart when Kaylie (Judith Jones) returns to Tampa in Second Noah (ABC, Sunday at 7 p.m.). Meanwhile, Noah (Daniel Hugh Kelly) helps a friend (guest star Charles Nelson Reilly) save his business. For the family.

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Screech (Dustin Diamond) organizes a “Get Out the Vote” drive at the mall in “Vote Screech,” an episode of Saved by the Bell (NBC, Saturday at 9 a.m.). Screech learns, however, that not everyone is as interested in the election as he is. For ages 8-16.

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Eighty-two musicians, all of them under the age of 12, perform at the Hollywood Bowl in “Disney’s Young Musicians Symphony Orchestra” (Disney Channel, Saturday at 7 p.m.). Disney has presented the concert for six years in a row. The event features the works of American composers and includes Michael Bolton singing “Go the Distance,” from Disney’s animated feature “Hercules.” For the family.