“Scrubs” (9 p.m., ABC): You just never really know what’s going to go down on

“Scrubs” (9 p.m., ABC): You just never really know what’s going to go down on “Scrubs.” In tonight’s episode, J.D. tries to teach a lesson in compassion with the help of “Sesame Street” creatures Elmo, Grover and Oscar the Grouch.

“The Whitest Kids U’Know” (10 p.m., IFC): White they may be, but the Whitest Kids U’Know are as colorful (and off-color) as ever as they start their third season of twisted comedy. Composed of Trevor Moore, Sam Brown, Zach Cregger, Timmy Williams and Darren Trumeter Jr., this Brooklyn-born troupe returns to IFC in a new 15-minute format, as part of the network’s weekly “Automat” programming block. First up: a racy brand of cat food; a desperate car dealer’s sales pitch; a bargain-basement edition of dramatized Bible stories; and what might be the dumbest newscast in the world. In subsequent episodes: a strange technique for underage drinking and water balloons in the Wild, Wild West. Thanks to this special kind of Kids stuff, it’s all even stranger than it sounds.