Between Two Ferns: The Movie (2019) review

For years, Zach Galifianakis has had a very popular (and super sarcastic) web show - in which he roasts celebrities with exceptionally crude questions and they have to sit there and take it (they're in on it) - and now it gets the Lorne Michaels treatment: his character is given an ultimatum by Funny or Die overlord Will Ferrell (as himself?) to go across America and provide for him ten more interviews, so he meets with David Letterman, John Legend (and Chrissy), Benedict Cumberbatch, Peter Dinklage, etc.  The schtick is good for the 3-5 minutes online - like badgering Obama, making fun of Hillary Clinton, commenting on Natalie Portman's pubic hair - but when you push it to ninety minutes it gets stale really fast.  There are a few laugh-out-loud lines (especially the Paul Rudd interview) - and the blooper reel is worth watching - but you have to wonder: Why?  To mention that Hollywood sterilizes everything and artistic integrity is rare?  Who doesn't know that?