A streetcar conductor has adventures with a would-be passenger hippo, a cow blocking the tracks, and a runaway train while he, his passengers, and some hobos sing the title song.
You can now watch Smile, Darn Ya, Smile! online on the following streaming providers in the United States.
| Production | Hugh Harman | Producer |
| Directing | Rudolf Ising | Director |
| Production | Leon Schlesinger | Producer |
| Production | Rudolf Ising | Producer |
| Visual Effects | Larry Martin | Animation |
| Visual Effects | Carman Maxwell | Animation |
| Sound | Bernard B. Brown | Sound |
| Visual Effects | Friz Freleng | Animation |
| Sound | Frank Marsales | Original Music Composer |
