Mark and Ronan welcome comedian Tristan Griffin for some serious #impersonations #JimmyFallon #BruceWillis #JamesGandolfini #TheMuffinMan #PatrickStewart #MichaelCain #TheWeeklyRundown #WillSmith #JadenSmith #PoliticalPops #EdiblePoliticians #ContinentalBreakfast #HolidayInn #JohnyCarson #TomBrady #AlGore #GeorgeWBush #PierceBrosnan #number2 #JohnMalcovich #TraceyMorgan