Actor:
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1. The Tonight Show Starring Johnny Carson (1962), seriale...Self - Guest
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2. The Landlord (1970), film...Peter
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3. The Owl and the Pussycat (1970), film...Barney
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4. Căutarea fericirii (1971), film
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5. Îmi sare ţandăra (1974), film...Petit rôle
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6. Tiganul (1975), film
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7. Like a Boomerang (1976), film...Lezsin
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8. The Gang (1977), film
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9. Cascadorul Hooper (1978), film...Roger Deal
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10. Nobody's Perfect (1981), film...Walter
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11. Dangerous Curves (1988), film...Bam Bam
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13. Încurcaturi sentimentale (1994), film...Mr. Lobel
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14. Radioland Murders (1994), film...Father Writer
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15. Jeffrey (1995), film
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16. O zi minunată (1996), film...Dr. Martin
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17. Cum să ajungi președinte (1998), film...Norman Asher
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...Self ('The Funeral' sequence)
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19. Monty Python: Live at Aspen (1998), film
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20. Goosed (1999), film...Dad / Mel
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21. The Safety of Objects (2001), film...Howard Gold
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22. Dragoste cu preaviz (2002), film...Larry Kelson
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23. Oameni pe care îi știu (2002), film...Dr. Sandy Napier
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24. Comedian (2002), film...Self
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25. CenterStage (2002), seriale...Self
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26. Cum sa scapi de un tip in 10 zile (2003), film...Phillip Warren
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27. Ira & Abby (2006), film...Seymour Black
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28. Acoperă-mi inima (2007), film...Jonathan Timpleman
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29. Jonathan nebun cu acte (2007), film...Self
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30. Monty Python Conquers America (2008), film...Self
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31. Plan de rezervă (2010), film...Dr. Scott Harris
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32. Robert Klein: Unfair & Unbalanced (2010), film...Self
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33. Demoted (2011), film...Bob Farrell
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34. Dirty Movie (2011), film...The CEO
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35. Another Dirty Movie (2012), film...The CEO
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...Self
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37. Misterele Laurei (2014), seriale...Leo Diamond
Scenariul:
Producător:
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...executive producer
Vocea:
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1. The Last Unicorn (1982), film...The Butterfly