When it becomes clear that his solo album is a failure, a former boy band member does everything in his power to maintain his celebrity status.This is the third trailer starring Imogen Poots, Andy Samberg, Martin Sheen, Bill Hader, Sarah Silverman, Will Arnett, Maya Rudolph, Joan Cusack, Will Forte, Adam Levine, Snoop Dogg, Paul Scheer and Joanna Newsom released for 'Popstar: Never Stop Never Stopping' in HD.