DRAMA. Sherlock fanatics are already up in arms over the casting of Lucy Liu as the traditionally male Watson to Jonny Lee Miller's Holmes. Another sticking point for purists: The quintessential British detective now finds himself solving crimes in modern-day New York City. Anything else? Well, Sherlock has tattoos — but retains his good old demons, grounding his genius and making him relatable. Well, almost relatable.
Series premiere, 10 p.m., CBS
COMEDY. Louie has anything but a very merry December in tonight's season finale.
Season finale, 10 p.m., FX
"Saturday Night Live: Primetime Election Special"
SPECIAL. Will a parody of any politician this election season reach the lofty comedic heights of Tina Fey's Sarah Palin last go-round? If not, it's not for a lack of source material.
8 p.m., NBC
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"Two and a Half Men"
COMEDY. Michael Bolton guest stars as himself, hired by Walden to serenade his lady as if it were 1991.
Season premiere, 8:30 p.m., CBS