Continuity mistake: First game of blackjack. The arm candy brunette whispers to her beau that everything will be fine. The casino guy moves his hand from chin to collar, but in the next shot he's back leaning against his palm with his chin. More of that in the next cut; her hand is on his shoulder, on the table at the cut. (00:30:10)
Continuity mistake: Pilots and flight control are talking about the weather forecast. There's a close-up of the control tower monitor. Next shot is a wider one, and the computer has a different layout of open windows. (00:30:55)
Continuity mistake: Carol asks her boss if he wants a card, and he says no. In close-up, he has a finger up his cheek, and it was not so in the previous wider angle. (00:31:40)
Continuity mistake: Jack the tech guy picks the fried board up from the radio station. Between the close-up and the second shot of the scene, the shadow from the keyboard changes significantly. (00:32:25)
Continuity mistake: Jack tries to brainstorm a solution with Bob for jammed landing gear problem. Bob is useless though, and just start sobbing. In his close-up you can see the monitor on the console is switched off, while it's on in the wide shots of the room. (00:36:25)
Revealing mistake: Jack is lying on the couch (whoever managed to fetch him back from the nest is anyone's guess) with an alien tentacle up his nose. The special effect used to display the invading organism swelling his brains is an obvious image morph that does not look in any way plausible visually alone - let's not even consider the glaring anatomical issues. (00:39:55)
Continuity mistake: Mike and the rich couple sit down to play some Virtual Chess. The brunette puts her hand on the guy's shoulder, but at the cut it's on the armchair's back. (00:41:25)
Continuity mistake: Carol reports to Mike Don's message about the strange creatures eating up the plane's electrical system. Mike removes his visor at the cut, and suddenly on his chair you can spot the fingers of the woman next to him, who had her hand in a different spot before. (00:42:45)
Revealing mistake: When Don leaves the cockpit to check on Jack, now sans tentacle, he walks right to left across spaces on green screen. His walking speed does not match the scrolling of the background. (00:46:45)
Revealing mistake: When the co-pilot searches for the missing tentacle wielding a hatchet, the creature creeps under the carpet. The distortion from the CGI effect on the rug is easily noticeable. (00:49:40)
Other mistake: The virtual chess game ends with the queen taking the other queen and then the king as the word "Checkmate" flashes. Ignoring the fact that technically the king is never taken even when checkmate is declared (many videogames add flamboyant animations), it still was not a checkmate. The king in B1 had C1 to go to, it is not under threat. (00:50:55)
Revealing mistake: After the crew decided (rather arbitrarily) to use fire to scare the monsters off, the camera zooms on Jack. The zoom through the plane window is a digital effect with the plane being all CGI, and it shows because the perspective is all wrong. Jack would have never been visible from the window at that distance and at that angle. (00:55:55)
Other mistake: Jack's eye pops out in a spurt of blood; besides the phony CGI effect, he manages to spray with blood the part of the glasses that faces the camera (the same direction he is facing) and not the side that faces him. Moreover, lengthy blood drips appear on his cheek only at the cut, absent in the first shot. (00:56:45)
Revealing mistake: Mike putts successfully against his opponent and decides to celebrate. He does so by juggling a golf ball; too bad it's a poorly textured CGI golf ball that does not even appear rigid. (01:02:05)
Other mistake: Pat faints on the green, blocking the shot of the rich patron. Since the curtains were open and the group of four people was facing the entrance, which is right by the golf hole, it's impossible that nobody saw her slowly stagger her way to the green, nor heard her wheeze. (01:02:40)
Continuity mistake: The barf puddle on the green changes in between shots, and Pat has her mouth open when Don pulls the alien out of her mouth, but closed in the shot that follows. (01:03:00)
Continuity mistake: The facehugger-like creature puked by the co-pilot escapes Don's swings by making a hole in the wall behind the rack. However, at the cut you can see that wall and the hole is gone. (01:03:10)
Continuity mistake: When Don probes the first planter with the golf club, the position of the various plants changes between shots. (01:03:40)
Continuity mistake: Don whacks the alien crab on the roulette; the cards on the table are different between shots (there is a cluster of three cards that is on the left, then on the right of the dead beast, for instance). (01:03:50)
Continuity mistake: Don swings the golf club at the creature on the bar; the stewardess ducks behind the counter and starts scurrying away. The creature jumps away, but in the next shot the bug jumps up her wazoo while she is standing and facing the counter. She couldn't be in that spot and in that position this fast. (01:04:15)
