Mike Hughes on TV

1) “Saturday Night Live” season-finale, 11:29 p.m.,, NBC. The 51st season ends big, with two familiar guys. Will Ferrell was a regular for seven seasons, many of them as the show’s main star (shown here). Here’s his sixth turn as host, with Paul McCartney’s sixth as music guest. Both men have also popped into “SNL” specials, including the 50th-anniversary one. Read more…

1) “Top Hat,” 9 p.m., PBS. The silly plot stretches a mistaken identity to the breaking point; still, the show redeems itself with superb song and dance. Based on a 1935 movie (with extra Irving Berlin songs added), this has gifted stars Phillip Attmore (shown here) and Amara Okereke doing “Cheek to Cheek,” “Puttin’ on the Ritz,” “Let’s Face the Music and Dance” and more. Read more…

1) “Fear Factor: 48 Hours of Fear” opener, 9 p.m., Fox. We thought the first two versions of “Fear Factor” were creepy enough. But this two-week show adds more: People face challenges while going 48 hours without sleep. Contestants (shown here)P are a yacht captain, a firefighter captain, a lawyer, a dental hygienist and people who work in marketing and health care. Read more…

1) “Chicago P.D.” season-finale, 10 p.m. NBC. The season began by adding a potent character: Arienne Mandi (shown here) is an American actress who has Chilean and Iranian roots and speaks four languages. She plays Eva Imani, who worked for a private military company, speaks Farsi and was fiercely convincing doing undercover work. Now she confronts her past. Read more…

1) “NCIS: Sydney” season-finale, 9 and 10 p.m. CBS. It’s time for a final showdown with the conspiracy group known as The Collective. For Mackey (shown here), that goes back to her failed mission in Afghanistan. Now an FBI agent has been killed in Fiji and a deadly battle looms.
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1) “American Idol” season-finale, 8-11 p.m., ABC. The night will be stuffed with performers. They include Alicia Keys, Nelly, Tori Kelly, Brad Paisley, Jason Mraz, Motley Crue, Gin Blossoms, the three judges and former runner-up Clay Aiken. Then someone — Keyla Richardson, Hannah Harper or Jordan McCullough (shown here, right, last week with Elliott Yamin) — will become the 24th champion. Read more…