What to Watch on Tuesday: Gwen Stefani’s Christmas special, Amy Sedaris’ tips on romance

Gwen Stefani’s You Make It Feel Like Christmas (9 p.m., NBC) – Blake Shelton, Chelsea Handler and other guests join Gwen for a night of song (classics and originals), dance and festive skits — with celebrity cameos.

Also on tonight . . .

Finding Your Roots (8 p.m., UNC-TV) – Dr. Henry Louis Gates guides Questlove, Dr. Phil and Charlayne Hunter-Gault through their ancestry.

The Mayor (9:30 p.m., ABC) – Courtney pledges to make Christmas joyous for all, but doesn’t have the budget to make it happen.

Scrooged (8 p.m., AMC) – Bill Murray plays a ruthless TV network chief who meets the ghosts of Christmases past, present and future.

The Long Road Home (10 p.m., National Geographic) – Bourquin struggles to signal helicopters in a desperate last-ditch effort to get located, culminating in a climactic final battle.

At Home with Amy Sedaris (10:30 p.m., truTV) – Amy dedicates her entire show to the difficult craft of romance, which includes tales of romance courtesy of Patty Hogg.