Check it out, from The Colbert Report Web site.
They look utterly serious when playing. Apparently, they’re not so good at “Tom Sawyer.” 
They didn’ t hook the amplifier up correctly (if they used one at all).
Hilarious! They really did seem weirdly intense about the whole thing, which actually made it funner.
Anybody have a link to the actual performance they did on the show?
Neil Peart probably didn’t know what to do with only four drum pads.