To his friends and family, Richard LaVon Griffiths was a loving, hard-working truckdriver from Beaver. To the Sundance Film Festival audiences who saw him in Salt Lake City filmmaker Trent Harris’ “Beaver Trilogy,” Griffiths was an acting talent with a personality so eccentric, honest and charming, he became a cult-film figure. Griffiths, also known as “The Beaver Kid” and “Groovin’ Gary,” passed away Feb. 2 at Salt Lake City’s Intermountain Medical Center. He was 50 years old.