Weird Science - Season 4 - Eps 19: Gary and Wyatt's Bloodsucking Adventure
Gary, Wyatt, and Lisa all decide to go clubbing after hours and become ""creatures of the night."" Lisa turns them all into cool vampires, except the fact that they crave Yoo-Hoo instead of blood. Being vampires gives the guys new powers. They now have the ability to hypnotize people, which they enjoy using on cute women. The night turns out to be not so great when they find themselves with a real group of bloodsucking vampires. Principal Scampi and Chett are determined to stop the vampires and become vampire hunters.
About Weird Science

Title: Weird Science
First Air Date: 1994-03-05
Last Air Date: 1998-07-25
Status: Ended
Rating: 6.682/10 (from 74 votes)
Language: EN
Seasons: 5
Total Episodes: 88
Network: USA Network
Genres: Sci-Fi & Fantasy, Comedy
Production Companies: Universal Television, St. Clare Entertainment, USA Network, Universal Television Entertainment
Synopsis
Gary Wallace, a teenager who dreams of beautiful women and a cheerful life, and his only friend, the shy and geek Wyatt Donnelly, always serve as a target for ridicule and bullying of violent classmates. Once using a computer and mysterious electrical radiation, they manage to bring to life the "woman of their dreams." Her name is Lisa, and she is ready to fulfill the wishes of her creators ...
Cast

Michael Manasseri
Wyatt Donnelly

John Asher
Gary Wallace

Vanessa Angel
Lisa

Lee Tergesen
Chett Donnelly