Actor:
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1. Hell Is for Heroes (1962), film...Pvt. Driscoll
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...Self - Guest Host
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3. Fractured Flickers (1963), series...Self
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4. Hot Millions (1968), film...Willard C. Gnatpole
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5. Catch-22 (1970), film...Major Major
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7. The Bob Newhart Show (1972), series...Dr. Robert 'Bob' Hartley
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8. Little Miss Marker (1980), film...Regret
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9. Newhart (1982), series...Dick Loudon
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10. Bob (1992), series...Bob McKay
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11. Svengoolie (1995), series...Dr. Robert 'Bob' Hartley
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12. In & Out (1997), film...Tom Halliwell
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...Sid Post
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14. Elf (2003), film...Papa Elf
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...Judson
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...Judson
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17. The Big Bang Theory (2007), series...Arthur Jeffries
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...Judson
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19. Horrible Bosses (2011), film...Lou Sherman
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20. Five (2011), film...Dr. Roth
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21. The Librarians (2014), series...Judson
Voice:
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1. The Rescuers (1977), film...Bernard
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2. The Rescuers Down Under (1990), film...Bernard
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...Leonard the Polar Bear