VANCOUVER The CanWest ComedyFest in Vancouver , British Columbia , runs the gamut of comedic fare : big names -LRB- Scott Thompson , left , of '' The Kids in the Hall , '' and Steven Wright -RRB- ; performers from '' Late Show with David Letterman ; '' local comedians trying for a chance at a $ 25,000 prize ; improvisation ; a raunchy comedy night ; and a family day .