Revealing mistake: When Lowry first arrives at Buttle's flat to return the cheque, he hears a cough and turns to see a man smoking a cigarette, half hidden by a column. When he blows a cloud of smoke it is easy to see that it comes from a tube next to his mouth. He isn't even exhaling at the time.
Continuity mistake: Dabney Coleman is chasing Tom Hanks and Lori Singer into the Senate Office Building and in one shot has his flip-up shades on and the next shot they're gone. All in an impossible split second.
Continuity mistake: Check out the person in the back seat of the car behind Susan Sarandon who's not supposed to be there. I think he taps her on the shoulder.
Continuity mistake: In the scene where everyone is going to the Tanning Invitational, Chris grabs two Hawaiian Lei's and a straw hat from a girl at the door. He puts a blue lei on Mitch and holds on to the red one and the hat. The shot switches to just Chris and when it goes back to Mitch he has on the red lei. Back to Chris again who talks a little more then reaches over and puts the hat on Mitch's head, who is again wearing the blue lei.
Continuity mistake: When the Antereans go into the sea for about the second time I think, Jack stays on the boat and starts playing about with the machine and makes it go off. When it does he drops a load of sweets or nuts out of the bag he was holding, but when the camera cuts away then cuts back there are no nuts or sweets on the floor.
Revealing mistake: When Hightower throws the football to the hood, the hood flies back to hit the door. After he hits it, you can see the black wire that pulled him.
Continuity mistake: Near the end of movie Albert Brooks is driving to NY City. But the shot shows him driving away from NY instead of toward NY and the Lincoln Tunnel.
Continuity mistake: When Leroy is fighting Goliath in the club, the bald headed guy changes between lying face-up and face-down in almost every shot.
Continuity mistake: When Grove is shooting at Remo with the handgun and Remo is ducking the bullets, the trees behind Remo change position throughout the scene.
Continuity mistake: As Porky's Riverboat nears the draw bridge, you see Pee Wee activate the bridge so that it begins to lower. Look at the angle of the bridge as Pee Wee is running by it, making his getaway. The bridge is almost down. The scene cuts to the River Boat's view and you can see that the draw bridge is all the way up and just starting to come down.
Continuity mistake: Near the end when the vampires are trying to get into the crypt and Jim Carrey has locked them out, we see two vampires trying to enter the room through one door and others going around to get in through the other entrance. When they get in, the vampires have reversed which entrance they were trying to use - the ones who stayed at the first door enter through the second door and vice versa.
Revealing mistake: In the scene where Herbert and Dan re-animate the dead corpse, watch closely when Herbert rams the little buzz saw into the corpse's chest. At the bottom of the screen, you can see where the fake chest ends.
Factual error: There's a couple of scenes where Izzy goes into a speech about how he came to America when he was 10, and he owes so much to that country. The historical Izzy Einstein came to America when he was 15.
Continuity mistake: When Jackie puts the sword in the wall you can see a hole made by the sword from an earlier scene take. When it cuts back to another shot the hole is gone. (01:08:30)
Factual error: The KGB agent hunting Jonathan is carrying a Spanish Campo-Giro pistol. There's no way a KGB agent would carry a foreign sidearm in a Soviet Bloc country, especially one that was phased out of service in the late 1920's.
Factual error: In the beginning when the college grads are making drinks in the blender, they're using Citrus Hill orange juice. The movie takes place in 1971 and Citrus Hill wasn't on the market until the mid 80s.
Continuity mistake: In the flashback scene (where Cassie has the crazy long hair) we see "young" Cassie perform a routine in the studio. Zach comes out of the shower towelling his hair and watches her. We see his hair is messed up having just been roughly dried with a towel. The next shot is Cassie dancing, then the next shot is back to Zach, and this time his hair is combed nicely down.
Revealing mistake: On the ledge Robert Hayes is attached to the wall by a wire protruding from his shirt.
Suggested correction: Not true, the ledge was only 2 feet off the ground.
Factual error: In the shot of Florence with several bridges and the river shown, cars and motorbikes can be seen going across the lowest bridge in the shot. (00:10:10)