On this day in movie history - Slither (1973):

Slither,

directed by Howard Zieff,

written by W. D. Richter,

was released in the United States on March 7, 1973.
Music by Tom McIntosh.

Cast:
James Caan, Peter Boyle, Sally Kellerman, Louise Lasser, Allen Garfield, Richard B. Shull, Alex Rocco, Seamon Glass, Wayne Storm, Diana Darrin, Stuart Nisbet, Edwina Gough, Al Dunlap, James Joseph, Virginia Sale, Alex Henteloff, Len Lesser, Garry Goodrow, Raven Grey Eagle, William Noland, Jack Perkins, Moira Sher.