Also possibly the Doctor Who story "The Invisible Enemy", which had a "Fantastic Voyage" type plotline in which the Doctor and his assistant Leela are cloned, and the clones miniaturized and injected into the Doctor to defeat invading parasites called the Swarm.
1. After the Professor places the Zoidberg micro-droid on his finger, the Farnsworth micro-droid walks into frame on his own finger. The wall, ceiling, and doorway can be seen in the background. Then, when the Professor micro-droid puts his finger down at his side, the background doesn't change. Since the motions of the micro-droid's hands mimic the Professor's, this means that the Professor put his finger down at HIS side, and as the droids were all standing on the Professor's finger, the area seen behind the micro-droids should have been completely different.
2. If the micro-droids were big enough for the Professor to pick up with tweezers, then they would be too big to be the size which they were inside Fry's body, relative to his red blood cells and capillaries.
~DarthArada~ "Snuh!" Homer Simpson "We have all the time in the world..." ~George Lazenby/James Bond "On Her Majesty's Secret Service" MUSSOLINI TO EMBARK ON CHEST EXPANSION CAMPAIGN ~The Onion