Continuity mistake: At the conference, when the President is announced, there is a wide shot of the crowd and you see a lot of people standing in the background against the wall. There are also several spotlights turned on. Then it cuts to the stage where Frank and the squad are walking. When it cuts back to the crowd all the people in the background are gone and the spotlights are switched off. The crowd reappears later and the spotlights are on again.
Trivia: A few of the jokes featured in the movie (the scene when Frank, after falling through Habsburg's warehouse roof, first looks messy and, after smoothing his hair, is totally clean again; or the roof-top shootery with a goon less than two yards away, and always missing) were featured in the Naked Gun's prequel series, Police Squad. Frank's habit of treating every piece of cloth thrown into his face like a monster clinging on likewise originates from that series.
Commissioner Brumford: [On phone.] Hello? He did what? How many animals escaped? Oh, my god.
Frank: Hello, Commissioner. You're looking lovely this evening.
Commissioner Brumford: Do you realize that because of you this city is being overrun by baboons?
Frank: Well, isn't that the fault of the voters?
Frank Drebin: [internal monologue] I couldn't believe it was her. It was like a dream. But there she was, just like I remembered her. Her delicately beautiful face, and a body that could melt a cheese sandwich from across the room. And breasts that seem to say "hey, look at these." She was the kind of woman that made you want to drop to your knees and thank God you were a man. Yeah, she reminded me of my mother all right, no doubt about it.
Captain Hocken: Frank, snap out of it. You're looking at her like she was your mother, for Christ's sakes.