It's larger in scale and more ambitious than most modern American comedies, but similarly broad; because its protagonist is a passive, simple man who has numerous extraordinary adventures and run-ins with famous people, it superficially resembles "Forrest Gump."
Granted, Swedish director Felix Herngren's film does have a strong resemblance to "Forrest Gump" -- and a hero who's just a tiny bit twisted.
Writer (with Hans Ingemansson) and director Felix Herngren has made something like a bonkers Swedish Forrest Gump , what with Allan’s life having taken him through the Spanish Civil War (“For years I did nothing but eat, sleep, and blow things up”), the Manhattan Project (biggest explosions ever!), Cold War Russia (very Tinker Tailor Soldier Spy ), and now what is perhaps is greatest adventure ever, not for the least which reason in that it teams him up with a former circus elephant (among other intriguingly weird characters).
Like “Forrest Gump,” the protagonist runs into, and co-writes history with, a stream of heavies from Joseph Stalin to Ronald Reagan.
In the flashback scenes, director Felix Herngren seems to be going for a Forrest Gump-like historical fable, but in the more manic present-day scenes, Herngren leans on glib violence and weak screenwriting clichés.
“The 100-Year-Old Man Who Climbed Out the Window and Disappeared” is the Swedish slapstick version of “ Forrest Gump .”