We all know that TV special effects are usually faked in some way. But before watching this video, you might not know how common those effects are. Even when there doesn't seem to be any effect at all. It's very well done, and it must save money. Otherwise, why bother? Anyway, they sure have come a long way from the obvious camera trickery on Bewitched or I Dream of Jeanie.
Don't Believe Everything You See on TV
TV fans are used to having special effects in TV shows, but the scenes where special effects or a green screen/Chromakey are used are usually easy to spot, or at least we look at them and say "I bet that was camera trickery or green screen." This video shows that Chromakey is used in almost all TV shows, even ones you wouldn't expect. . .
Source: TV Squad!