THEN: Dustin Diamond as 'Screech'
Dustin Diamond played Samuel "Screech" Powers, one of television's most famous dweebs. As Zack Morris' best friend, "Screech" was constantly caught up in crazy schemes. As Lisa Turtle's unshakeable admirer, he was hopeless. —XFINITY Entertainment Staff (Photo: NBC)
The opinions expressed are solely those of the author and do not necessarily reflect the views of Comcast.