Continuity mistake: Austin is in a different position in his frozen state in this film than he was in the first film when he was unfrozen.
Factual error: Through most of the film, a lot of the cars used are left hand drive, while in the UK cars are right hand drive. While left hand drive cars are occasionally seen in the UK, they're very few and far between.
Continuity mistake: When Austin is playing chess with Ivana, his necklace symbol keeps switching sides, yet he clearly isn't jolting around enough for it to move in this way.
Continuity mistake: After Austin and Felicity have crossed the street in London and have sat down at the cafe, where Burt and Elvis are playing, Felicity has a red handbag with her. She places the bag on the table whilst her and Austin talk about the future. When Austin says "care to dance" the bag is still on the table. They both go to dance, and the table is taken away by a woman towards the edge of the screen. The scene goes back to Austin and Felicity dancing for a second. The woman can now be seen with two chairs, but no table or red handbag.
Factual error: The song American Woman by The Guess Who is being played at the party when Austin goes back to 1969. Cool song, but it wasn't released until 1970.
Continuity mistake: There is a scene when Austin and Felicity spend a day on the town, go back to Austin's shag pad, then separate for the night. The next day they are back in the same exact clothes as yesterday (after a clothes change piece the night before).
Continuity mistake: After Felicity says to Austin, "Don't worry about me, you have to save the world", smoke starts to fill up the glass case she is trapped in(this is the scene in Dr. Evil's moon base). When Austin starts shooting the henchmen, Felicity's glass case isn't filled with any smoke.
Factual error: During the first joke about the shape of Dr. Evil's rocket, we see Willie Nelson. But he looks the same as he does today, when he should be thirty years younger.
Audio problem: When Fat Bastard bursts through Austin's apartment door, he pulls a revolver out of a box. When he does, the sound of the hammer cocking is heard, but he never cocks the hammer. It stays down for the entire scene.
Continuity mistake: When the movie starts Austin's hands on the Kamasutra book change positions between shots.
Continuity mistake: When Austin holds the Kamasutra sometimes it's next to his chest or not and the pocket of his silk robe is visible or not, depending on the shot.
Visible crew/equipment: When we first see Felicity come down the pole and walk toward Austin at his pad, the shadow of the camera is visible on her.
Continuity mistake: When the Frau introduces Unibrow, there are two Starbucks employees behind them working the right end of the counter. Cut to Unibrow and the Starbucks employees have disappeared.
Revealing mistake: When Austin pounds on the glass tube, it's easy to see they are three separate panels of glass, rather than being sealed. Therefore, the gas inside could have escaped.
Continuity mistake: When introduced, Mini Me is standing behind the white screen, he's posed with his right hand up, all the way to the reveal. When the screen slides open, his arm is down.
Visible crew/equipment: In the scene where Dr. Evil tells Austin that he is his father, if you look closely at the lower left of Dr. Evil's helmet, there is the reflection of a stagehand standing by one of the windows.(There are many reflections on his helmet, so you may want to pause it so you can look around for it.)
Continuity mistake: When Austin and Mini Me are fighting Mini Me hocks a loogie in Austin's face. The spit disappears almost immediately but we never see Austin wipe it away.
Deliberate mistake: When Austin is playing chess with Ivana, the pieces have been moved in impossible positions throughout their few moves.
Continuity mistake: In the whole movie, Dr. Evil's head switches from completely bald, to shaven. Also, in the scene when Austin is in his blue jumper in The Allan Parsons Project's main chamber, you can clearly see Dr. Evil's stand in and he's about 6 inches taller.
Continuity mistake: When Austin has just come back from the future and has been in the party with all the shooting, he and Felicity jump in the car in the middle of the night. One second later there's a back shot inside the car and it's dawn light. Two seconds afterwards they're driving down the road and it's broad daylight. Furthermore, the light changes from sunny, to a bit cloudy in each shot.
Answer: The music is the theme song to the TV show "Charlie's Angels".