Prof. Farnsworth shows his clone the fork he used to scrape off DNA from his back. Hermes takes the fork and then drops it on the floor. When the camera zooms out, there is no fork on the floor.
Bender plugs the television into a socket located underneath him. But when he was on the island in 'Obsoletely Fabulous' he hunted around the island for a socket to plug his blender in.