The venerable B-52 Stratofortress, or Big Ugly Fat Fella (BUFF), with 55 years of operational service, has 30 years of airframe life left!
A few movies with the big daddy of bombers:
Bombers B-52 (1957),
A Gathering of Eagles (1963),
Dr. Strangelove or: How I Learned to Stop Worrying and Love the Bomb (1964),
and By Dawn's Early Light (1990).