KS vanity project
It seems to me that Kevin Spacey overrates his own abilities. He is a good actor - that cannot be denied - but his singing, whilst better than most amateur vocalists, is simply not good enough for this project - his phrasing and timing are not exactly perfect. As for his dancing - I applaud his efforts - but he is not a dancer - he is too stiff and his body has no natural fluidity of movement.
The fact that he directed it is obvious in the length and self indulgence of his scenes. I do not know the facts of Bobby Darin's life - but this film gives me the impression that I still don't.