In terms of special effects and designs, the world of film has certainly come a long way since the days of Pepper's Ghost and Harryhausen monsters. With today's technology, we can board a strange vessel, visit other planets, encounter strange and fantastical creatures, and all with a green screen and some imaginative computer wizardry. This doesn't diminish our love for practical effects, but it does take a special set of skills to bring these incredible things to life, but it also takes a special set of skills to perform against a green screen and make it look believable. Though the effects artists make it seem easy, it can be hard to be taken seriously in a tight green suit.