'Daily Show' Audience Surprised by Colbert & Oprah

On Thursday's "The Daily Show," Stephen Colbert paid a visit to Jon Stewart and convinced the host to combine his "Rally to Restore Sanity" with his "March to Keep Fear Alive" -- which will now be called "The Rally to Restore Sanity and/or Fear."

If that weren't a big enough surprise, Oprah popped by the show via satellite with her own announcement: she had hidden tickets to the rally in Washington D.C. under all the audience members' seats (which reportedly included airfare and hotel).

Watch both big announcements!