Visible crew/equipment: Right as Young Biff starts to chase after Marty through the tunnel, there is a shot of the wheel spinning around, and you can see the camera crew reflected in the hubcap. (01:29:45)
Visible crew/equipment: In the scene where John Travolta is racing Kirstie Alley to the hospital, there is one shot where a camera rigging is clearly seen mounted on the hood of Travolta's taxi in the reflection of the storefront windows.
Visible crew/equipment: During the first game of the season, The camera pans across the press box to reveal Harry Doyle for the first time. During the pan, the reflection of the camera can be seen in the glass. (00:33:25)
Visible crew/equipment: Just before Clark goes down the hill on the saucer sled you see the view down the hill. If you look carefully at the right of the screen you can see two pinkish cables stretch into the distance. These are the pyrotechnics that make the explosions Clark sets off. You can see it clearly on the DVD version, but not too clearly in the VHS one. (00:50:15)
Visible crew/equipment: Just after our two heroes have been fired from Big Edna's, a black Porsche crosses the screen treating us to a perfect reflection of the sound man, complete with boom and Sennheiser microphone. Really, it's that clear. (00:07:55)
Visible crew/equipment: When Jones is fighting the bad guy, at the end they both jump in the air doing Karate kicks and you can see the mattress when Jones lands.
Visible crew/equipment: When the chairs are flying through the air in the courtroom, if you look closely, you can see the string pulling one of them. (00:34:30)
Suggested correction: This would need more clarification. I couldn't see any string in the mentioned sequences - and for the record, I don't think strings were used, you can easily find interviews with the production team that mention the different trick at work here (they quite literally 'shot' the chairs up in the air).
Visible crew/equipment: When the cheetah (an obvious fake dummy) pops its head inside the plane, you can see the crew member's hand and glove holding the dummy. (00:38:50)
Visible crew/equipment: When Billy is in the van telling the Wolf story, a microphone is visible behind Henry's left arm.
Visible crew/equipment: When Toxie walks into the video store and discovers that a gang is destroying it he grabs one of the gang members and punches him in the stomach. If you look at the guy's belly just before Toxie punches him you'll be able to see a big red spot on his shirt. This big red spot is actually the blood pack that the guy is wearing underneath his shirt and also where Toxie is supposed to hit him.
Visible crew/equipment: When Karen walks into the boys' bedroom telling Gil that Taylor isn't feeling well, as Justin stands there naked, the reflection of the boom mic dips into view in the center window, at the top right corner. (00:06:45)
Visible crew/equipment: When Buck accidentally takes the stray cat into the house, if you look in the slat between the frame and the door you can see a crewmember waiting to close it, not the kids. This person is too big for a 6 year old. (01:00:25)
Visible crew/equipment: In the scene where Harry Crumb can hear Elliot Drasion in the room tidying up, you can see a microphone at the very top of the screen.
Visible crew/equipment: When Bernie walks out from his office bathroom and starts talking to Richard and Larry about the insurance policies, a boom mic reflection can be seen behind him - in the mirror's upper left corner. (00:13:05)
Visible crew/equipment: When Barbara drives her car towards the Morgan and makes a 180ยบ turn, the wide angle shows that she has been replaced by a stunt woman.
Visible crew/equipment: On their way to New York, the couple stops at a Deli. When they open the car's door, film crew are reflected.
Visible crew/equipment: When the neighbors are shooing the cops out, the husband opens the door. As he does the reflection of a crew member in the door glass.
Visible crew/equipment: During the opening scene, when Maria is walking to the bus stop, she walks past a number of shop windows and you can see at least two crew members pushing a camera reflected in the windows (on the right side of the screen). (00:01:32)
Visible crew/equipment: When Mookie throws the trash can through Sal's window, the reverse shot from inside the restaurant reveals the main camera, in the lower left portion of the screen, moving in towards the window as it's smashed.