No 'Hangover 4' in the works, Zach insists

Zach Galifianakis insists there won't be a 'Hangover 4'.

The actor - who reprises his role as Alan Garner in the third and final installment of the raucous comedy franchise - admits he was reluctant to film a sequel to the original 2009 film and while he has enjoyed making the two follow-ups, there won't be any more.