When: Weeknights, 11:30, on Comedy Central
What: The polar opposite of Jon Stewart, Stephen Colbert is a hard-core conservative - or at least that's the role he plays on TV. Next year, he'll leave Comedy Central and take over Late Show on CBS when David Letterman retires. So enjoy Colbert's faux act while it lasts. He's ambivalent about marijuana legalization, on one hand calling it "America's Pot-astrophe," on the other jumping on the bandwagon ("the market has spoken and the market is tokin'").