The actor, who's played some of filmdom's most beloved characters, including Doc Brown in "Back to the Future," Professor Plum in "Clue," and Uncle Fester in the "Addams Family" films, was born on October 22, 1938 in Stamford, Conn.
Partly because of his height, and partly because of his manic intensity and commitment to even the wildest characters, he's portrayed a series of eccentrics, from mad scientists to aliens; had an impressive, award-winning theater career; and will always be remembered as Reverend Jim on "Taxi."
In honor of his 77th birthday, we've come up with 75 reasons why he's so awesome.
1. He's played a Klingon, a cartoon, the Wizard of Oz, an angel, a leper, and a geriatric vampire.
2. He stands an impressive 6'1."
3. Because he's so tall, he had to hunch over to appear in the same frame with "Back to the Future