Mariah Carey, pictured, makes an attempt to reclaim her diva status with an appearance on "The 2015 Billboard Music Awards," hosted by Ludacris and Chrissy Teigen. Carey may not be a hot hitmaker now, but keep in mind that she's had more No. 1 songs than any other solo artist in the Billboard chart's 56-year history. 7 p.m. Sunday, KSTP, Ch. 5

Girl power

Comedy's most consistent duo has to be Tina Fey and Amy Poehler as they proved so successfully in 2008's "Baby Mama," a romp in which Fey picks an inappropriate surrogate mother. Can these two please make a movie every two months? 7 p.m. Friday, Oxygen

It takes two

No group finds more creative ways to party than country music artists, which is why we're looking forward to "ACM Presents: Superstar Duets," with the likes of Reba McEntire, Miranda Lambert and Alabama showing what teamwork is all about. 8 p.m. Friday, WCCO, Ch. 4

Last call

From the looks of it, Don Draper's world will never be the same — and neither will ours. "Mad Men," which concludes its critically acclaimed run, may not go down as the greatest drama of all time — although some will make that argument — but it was instrumental in proving that basic cable could produce TV just as riveting as HBO and Showtime. One last toast to old friends. 9 p.m. Sunday, AMC

Neal Justin