‘Jimmy’ is a cartoonishly bland biopic of classic Hollywood actor

There’s a scene in “Jimmy” where the actor James Stewart (KJ Apa) goes on a little rendezvous with Lady Julia (Kara Killmer), an aristocratic Brit he’s met while fighting for the U.S. Army Air Force during World War II.  They take refuge under a bridge while it rains, trading secrets and lightly flirting well into the night. At one point, Lady Julia asks James – Jimmy, if you will – if the real James Stewart is as earnest, dear, and courageous as the characters he plays in movies.  There’s a lot to suggest that the real James Stewart, who is among one of the most popular classic Hollywood actors of all time, might have been as likeable as he pre-war movie persona would lead you to believe (post-war is a different story – the James Stewart of “Vertigo” is very different from the James Stewart of “The Philadelphia Story.”) But, there’s also a heck of a lot to suggest that he – like any human being – was complicated. And “Jimmy” is absolutely uninterested in that complication, prefe