Jon Stewart finally gives in and has a go at the angry old man of the senate, and deservedly so. Since losing to Obama in 2008 the crotchety old bastard has renounced his so-called "maverick" ways and pretty much any principle he ever had, and is now just another rightwing bigot polluting the airwaves at every available opportunity.
As with Michael Steele, a muppet is used. In this case a rather foul-mouthed one given to obscene gestures.