“Sit Down, Shut Up” (8:30 p.m., Fox): No, that’s not a rude order. It’s a

“Sit Down, Shut Up” (8:30 p.m., Fox): No, that’s not a rude order. It’s a rude — and crude — animated series set in a Florida high school. Warning: Prepare yourself for lots of jokes about private body parts.

“Desperate Housewives” (9 p.m., ABC): We knew for a while that this day was coming, but still it feels like there’s a sad suddenness to it as we bid farewell to Edie Britt (Nicollette Sheridan), Wisteria Lane’s leading man-eater. Was it really five seasons ago when she appeared in short shorts and a tight T-shirt while washing her car? Now, it’s time to go — after crashing into a power pole. The housewives reminisce about their fallen neighbor who, more often than not, had trouble fitting in.

“The Courageous Heart of Irena Sendler” (9 p.m., CBS): Anna Paquin leaves the vampire world behind to play a woman who saved the lives of nearly 2,500 Jewish children during World War II while serving as a Polish social worker. Marcia Gay Harden and Goran Visnjic also star.