Halle Berry, Bill Hader, Spring Snake Symphony A pregnant Halle Berry plugs Things We Lost In The Fire and shows a 3-D ultrasound image that resembles Dave. Also, Eric Buss and his "Spring Snake Symphony" (375 snakes-in-a-can) perform Strauss' "The Blue Danube." Details Casts Title Halle Berry, Bill Hader, Spring Snake Symphony Genres Talk Comedy Release Date 2007-10-12 Episode Runtime 01 Hours 03 Minutes Season Number 15 Episode Number 24 Production Companies Worldwide Pants, CBS Entertainment Productions, CBS Productions, CBS Studios David Letterman Self - Host Paul Shaffer Self -Musical Director Alan Kalter Self - Announcer (voice)