Stephen Colbert wrapped up his 9 year run on "The Colbert Report" on Thursday. "Big musical numbers" is probably the last phrase you would use to describe the political parody show over the past 9 seasons, but that's how it went out. Stephen Colbert went into the song, "We'll Meet Again" and then was joined on stage by his executive producer and friend Jon Stewart from the Daily Show. At first, this looked like it was going to be a fun and sweet duet between two pals, but then it instantly grew funner, sweeter and much much bigger.