The Nth Degree (Star Trek: The Next Generation)

"The Nth Degree" is the 93rd episode of the American science fiction television series Star Trek: The Next Generation, and the 19th episode of the fourth season. Set in the 24th century, the series follows the adventures of the Starfleet crew of the Federation starship Enterprise-D. Rob Legato directed and oversaw visual effects for the episode. He created a 3-D effect where the Cytherian's huge head appears to pop out of the screen, allowing him to have a face-to-face conversation with Picard.