Visible crew/equipment: In the scene where Felicity and Fat Bastard are in bed together, a certain shot reveals that under Fat Bastard's breast is a patch of velcro which holds it down.
Visible crew/equipment: When Austin is playing chess, two lighting screens are reflected on his glasses.
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.
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.)
Visible crew/equipment: When Austin and Felicity are on Dr Evil's island unpacking the bag in the tent, you can see clear shadows of lighting equipment up the top when viewed from the outside as the men first approach. Some lighting would have been required to light the tent, but they look like film gear and there is an excess of it.
Answer: The music is the theme song to the TV show "Charlie's Angels".