Review: 'Killing Gunther' is an amusing sendup of action flicks — and Arnold is a hoot

Keep your expectations low and you could do far worse, comedy-wise, than “Killing Gunther,” an amusing if dispensable mockumentary from former “Saturday Night Live” funnyman Taran Killam, who wrote, directed and stars.

Killam plays elite contract killer — and snappy dresser — Blake, who hires a...