The Unbelievable Truth/Awesome

"David Mitchell: For all of you listening at home -- yes, this is really happening."
 * Alan Davies smuggling all of his truths twice: in the 2009 Christmas special and again in the first episode of series 7. (Jo Brand also managed it in series 1, but the event was somewhat diluted because she accidentally included a sixth truth which Jeremy Hardy got a point for spotting.)
 * Phill Jupitus did the same in series 8 episode 2.
 * Rufus Hound delivering his entire lecture as a rap.