Original: He is best-known for his role of Santino ` Sonny ' Corleone in 1972 's The Godfather , Paul Sheldon in Stephen King 's Misery , ` Big ' Ed Deline in Las Vegas and for his role as Will Ferrell 's father in Elf .
Simplified: He is known for his role of Sonny Corleone in 1972 's The Godfather and for his role as Ed Deline on Las Vegas .