MGM golden girl Joan Crawford is to thank for a number of uncommon treats airing on TCM this month, including, happily, a rare film featured in That’s Entertainment:The Hollywood Revue of 1929. This film is most notable for being the first onscreen depiction of the now-classic “Singing in the Rain,” but there’s a LOT of other things going on in here as well… and the lack of focus, in turn, is probably why it’s not been seen more widely.