During the first 'Deathball match', the booth window is smashed and Wernstrom gets knocked onto the court, however in the next overview shot, the window is intact and he is still stood behind it.
When Stephen Hawking is talking in the science conference, the microphone disappears in the last shot.
When Kif says hello to Fry on the missile he switches back and forth from being on the left and right sides of its fin.
In Crimes of the Hot, the headless body of Agnew is given away to Wernstrom, yet in The Beast with a Billion Backs he is seen at Nixon's side again.
The pump and hand of the floating coffee machine change sides twice while they're prepping the ship.
During the Fonfon Rubok ceremony Amy's mom blinks, as her eyes shut, the lines composing the animation disappear and she is left with no eyes.
When Fry and Colleen are lying in bed, post-coitus, his hand is around her shoulder but it is the same colour of Colleen's skin, not his own flesh tone.
When Colleen meets pope Fry, on 1 frame her shadow has 3 arms.