"Lullaby of Broadway" (1951)

Doris Day couldn't give an unlikable performance. Here she's in a paper thin plot about a cruise ship performer coming back to NYC to reunite with her long lost mother who she believes is a famous broadway actress, but who is really a two-bit saloon singer. Despite too many coincidences and contrivances the piece sails along because of the star's gosh-darn-happy-go-lucky infectiousness, and the musical numbers where she pairs with impressive hoofer Gene Nelson as the romantic lead. It's Technicolor fluff but still fun.