Which actor, born March 30, 1937, is often said to be the subject of Carly Simon's "You're So Vain"?

Actors Alec, Billy, Daniel and Stephen are brothers with which last name? 1980 acting nominees included Eileen Brennan for "Private Benjamin" and which other "E.B." for "Resurrection"? Nebraska Governor Charles Thone had to keep order when which storms struck Grand Island in June 1980? Which sport uses the parry and the thrust? Which actor, born Byron Barr, took his stage name from a character he played in 1942's "The Gay Sisters"? Actor Massimo Troisi died shortly after finishing which 1994 film, whose title is an occupation? Which actor-playwright won the 1979 Pulitzer Prize for "Buried Child"? What last name is shared by actor Samuel L. and country singer Alan?