The anticipated ratings dominance of the first game of the World Series (6:30 p.m. today, Fox) has reduced virtually all network competition to reruns. The only nonrepeat on CBS, NBC or ABC is a “48 Hours Mystery” (9 p.m., CBS) about a murdered Peace Corps volunteer.

Once again, ABC uses Saturday night to “repurpose” (how’s that for horrible media speak?) its most popular new shows. On back-to-back episodes of “Lost” (ABC), creatures invade the camp (7 p.m.) and lack of sleep takes its toll (8 p.m.). And on “Desperate Housewives” (9 p.m., ABC), chilly words cast a pall over a long-planned dinner party.

Now, I know it’s pointless to criticize a white-hot show, particularly one seen as the savior of scripted dramas, but I can’t help but notice that “Housewives” is already repeating itself after only three episodes. In episode 2, Gabrielle’s (Eva Longoria) gardener lover escapes her husband’s detection and wrath by jumping out the window without his clothes on. He’s later seen trimming the hedges sans pants. And in a far more contrived scene on last Sunday’s episode (repeated tonight), Susan (Teri Hatcher) gets locked out of her own house stark naked, with only strategically placed shrubbery between her, ABC and a Janet Jackson moment. I don’t care how popular “Housewives” becomes. If I see one more resident running around the cul-de-sac in her birthday suit, I’m calling the “Jump the Shark” police.

• “Extreme Halloween” (8 p.m. Sunday, HGTV) showcases homeowners who approach the holiday with frightening intensity. Apparently, nobody takes Halloween more seriously that “Simpsons” producer Rick Polizzi, who entertains his costumed neighbors with pyrotechnics and a skeleton rock band. Another jack-o’-lantern fanatic creates his own singing animatronic pirates.

Tonight’s other highlights

• Mark Chestnutt, Chely Wright and Joe Diffie perform on “Grand Ole Opry Live” (7 p.m., GAC).
• Jude Law is host of “Saturday Night Live” (10:30 p.m., NBC), featuring musical guest Ashlee Simpson.

Sunday’s other highlights

• Scheduled on “60 Minutes” (6 p.m., CBS): new evidence about the 1955 murder of Emmett Till, a brutal, racially motivated slaying that helped inspire the modern civil rights movement.
• Game 2 of the World Series (6:30 p.m., Fox).
• A champion for the disabled gets her due on “Extreme Makeover: Home Edition” (7 p.m., ABC).
• A prominent atheist meets an ungodly fate on “Law & Order: Criminal Intent” (8 p.m., NBC).