Continuity mistake: After Elvis's first live performance, his parents are discussing how proud they are. They and the crowd are still moving in time to his song even though he's already stopped, indicating the scene was originally intended to take place during the song.
'Colonel' Tom Parker: Let's face it, son. The records aren't doing what they used to and the movie aren't doing much better.
Elvis Presley: That's probably because of all this material you keep shovin' down my throat, Colonel. Hell, you can't polish a turd.