Randall Rudy "Randy" Quaid is an American actor and voice actor whose only theatrical and credited Disney role (yet first in general) so far is Alameda Slim in Home on the Range. His other Disney role is Rockin' Rory in Stanley's Dinosaur Round-Up, which was released directly to video, and in which, he wasn't credited. He also played Sam Burns in the 1996 Touchstone Pictures film, Last Dance and Madman McKlusky in the 2002 Touchstone film, Frank McKlusky, C.I..
He is perhaps best known for his role as Cousin Eddie in the National Lampoon's Vacation as well as his Oscar nominated performance as Meadows in The Last Detail. His other film appearances include Independence Day, Kingpin, Brokeback Mountain, The Last Picture Show, What's Up, Doc?, Paper Moon, Midnight Express, Real Time, Parents and Moving.
Quaid has also appeared in numerous television film like Elvis, Inside the Third Reich, The Streetcar Named Desire, LBJ: The Early Years, Moonshine Highway and The Magical Legend of Leprechauns. He also appear as various character on the sketch show Saturday Night Live.
He is the older brother of actor Dennis Quaid and uncle of Jack Quaid.