Jimmy Stewart gives a promising performance in a film that starts off great and quickly descends into unfortunate boredom. The big problem? Glenn Miller just wasn't that interesting a character. Aside from the fact that he basically ordered his girlfriend (then engaged to another man) to take a train across the country and marry Miller instead, there's not much new to this up-from-poverty-to-famous-composer/musician story. The entire last half concerns Miller's work as a bandleader in the military (which is, I suppose, important since he died during World War II), but the very worst scene comes earlier in the film, when Miller and best gal Helen (June Allyson) visit a jazz club: The entire scene is filmed through a spinning color wheel. It may be the worst directorial decision in the history of movies.
It's too bad that one of the greatest films of all time is remembered for a line ("We don't need no stinkin' badges!") that doesn't appear in the film. (It's actually, "We don't need no badges. I don't have to show you any stinking badges!" Must be something about Bogart movies and misquoted lines...)
It's also too bad that one of cinema's great adventures is often forgotten as one of cinema's great tragedies, too.