Weekend television

"The Christmas Ornament" 8 tonight Hallmark A recent widow (Kellie Martin) struggles to embrace the holiday season.

"Saturday Night Live" 11:29 tonight NBC Lady Gaga hosts and performs.

"Almost Human" Sunday 8 p.m. Fox (new series) — In the future, cops are paired with robots.

"Catch a Christmas Star" Sunday 8 p.m. Hallmark — A famous pop star (Shannon Elizabeth) rekindles a romance with her high-school beau.

"Homeland" 9 p.m. Sunday Showtime — Carrie and Quinn pursue a key suspect in the Langley bombing.

"The Walking Dead" 9 p.m. AMC — The Governor is back! What is he up to?

"The Mentalist" 10:30 p.m. CBS — The Red John list gets even smaller.