Sad news has hit Hollywood as Gavan O'Herlihy has reportedly passed away. The veteran actor, who originally appeared on Happy Days and whose memorable big screen credits included classics like Never Say Never Again, Willow, and Superman III, was 70 years old. Gavan O'Herlihy was born in Dublin, Ireland, on July 29, 1951. Classic television fans may recognize him as the forgotten Cunningham sibling from Happy Days, playing the eldest brother Chuck Cunningham in the first episode of the 1970s comedy series. The character then vanished from the series with no on-screen explanation, coining the term "Chuck Cunningham Syndrome," which...