Most of the time, convention appearances are a one-and-done experience.  Very few individuals get a second time on the stage.

Tonight, Fred Thompson does.   A source familier with the McCain video production team informs Townhall.com that Thompson will narrate the John McCain Tribute video that will precede McCain's speech.

ALSO, the tribute/bio video for Gov. Sarah Palin that was scheduled to precede her speech Wednesday night will be shown Thursday.