| He plays the Priceline Negotiator | 33 |
| He plays the Devil in "The Devil's Advocate" | 58 |
| He plays Sam on "Private Practice" | 44 |
| He plays Sam in "Transformers" | 40 |
| He plays Prince Rainier in the upcoming "Grace of Monaco" | 67 |
| He plays Odafin Tutuola on "Law & Order: SVU" | 59 |
| He plays Niles' brother | 27 |
| He plays Mr. Micelli on TV | 26 |
| He plays Matt Houston's uncle | 33 |
| He plays Lou Grant on TV | 24 |
| He plays Lord Voldemort in Harry Potter films | 45 |
| He plays Klinger | 16 |
| He plays Jack on "30 Rock" | 36 |
| He plays Jack on "24" | 31 |
| He plays Jack Malone on "Without a Trace" | 51 |
| He plays Jack Donaghy on "30 Rock" | 44 |
| He plays House | 14 |
| He plays hard for the money | 27 |
| He plays Floyd R. Turbo | 23 |
| He plays Fin on "Law & Order: SVU" | 48 |
| He plays Dr. John Watson | 24 |
| He plays Dr. Jack Shephard on "Lost" | 46 |
| He plays Dr. Foreman on "House" | 41 |
| He plays Dr. Eric Foreman on "House" | 46 |
| He plays Dr. Carter on "ER" | 37 |
| He plays Cooper on NBC's "Las Vegas" | 50 |
| He plays Andy Bernard on "The Office" | 47 |
| He played Zola, Pasteur et al. | 30 |
| He played Yuri to Julie's Lara | 34 |
| He played Yuri in "Doctor Zhivago" | 44 |
| He played Yogurt in "Spaceballs" | 42 |
| He played Yemana on "Barney Miller" | 45 |
| He played WJM's Grant | 25 |
| He played Winchester on "MASH" | 40 |
| He played Will's adversary in "MacGruber" | 55 |
| He played Will Scarlet in "Robin Hood: Prince of Thieves" | 67 |
| He played Wesley on "Star Trek: T.N.G." | 49 |
| He played Wesley Crusher on "ST: TNG" | 47 |
| He played Waverly on "The Man from U.N.C.L.E." | 56 |
| He played Warren Buffett on HBO's "Too Big to Fail" | 65 |
| He played Vito in "The Godfather" | 43 |
| He played Virgil Earp in "Tombstone," 1993 | 52 |
| He played Venus Flytrap | 23 |
| He played Van Doren in "Quiz Show" | 44 |
| He played Uncle Junior on "The Sopranos" | 50 |
| He played Uncle Jesse on "The Dukes of Hazzard" | 57 |
| He played Uncle Charley on "My Three Sons" | 52 |
| He played Uncle Bill on "Family Affair" | 49 |
| He played Uncle Albert in "Mary Poppins" | 50 |
| He played Ugarte in "Casablanca" | 42 |
| He played Ugarte in "Casablanca'' | 46 |
| He played Tynan in "The Seduction of Joe Tynan" | 57 |
| He played TV's Poncherello | 30 |
| He played TV's Al Bundy | 27 |
| He played Tony on "NYPD Blue" | 39 |
| He played Tommy in "Tommy" | 36 |
| He played Tom Buchanan to Redford's Jay Gatsby | 50 |
| He played to the balcony | 24 |
| He played Throttlebottom in "Of Thee I Sing" | 54 |
| He played the youngest son on "Eight Is Enough" | 57 |
| He played The Thing in 1951 | 27 |
| He played the Thing in "The Thing" | 44 |
| He played The Thing | 19 |
| He played the same character for 20 years | 41 |
| He played the president in "Murder at 1600" | 53 |
| He played the Palace | 20 |
| He played the Painless Pole in "M*A*S*H," the movie | 61 |
| He played the movie character immortalized by the song "Axel F" | 73 |
| He played the mark in "The Sting" | 43 |
| He played the lyre, not the fiddle | 34 |
| He played the least nutzoid Bluth on "Arrested Development" | 69 |
| He played the Hulk on 1970s-'80s TV | 39 |
| He played the grandfather in "Little Miss Sunshine" | 61 |
| He played the Cowardly Lion | 27 |
| He played The Chief in "Dirty Harry" | 46 |
| He played The Cat in the Hat | 28 |
| He played the candidate in "The Candidate," 1972 | 58 |
| He played the bossy Stooge | 26 |
| He played Tessio in "The Godfather" | 45 |
| He played Tarzan in 1970 | 24 |
| He played Tarzan in 1933 | 24 |
| He played Tarzan | 16 |
| He played Sweeney on Broadway | 29 |
| He played Superman | 18 |
| He played Sulu on "Star Trek" | 39 |
| He played strong, silent roles | 30 |
| He played Stiller's biological father in "Flirting With Disaster" | 79 |
| He played Starsky on TV | 23 |
| He played Squiggy | 17 |
| He played Sparrow and Scissorhands | 34 |
| He played Spade and Queeg | 25 |
| He played Sonny in "The Godfather" | 44 |
| He played Sonny Corleone | 24 |
| He played Skipper on "Gilligan's Island" | 54 |
| He played Sinatra in "The Rat Pack" | 45 |
| He played Signor Emanuel Ravelli in "Animal Crackers" | 63 |
| He played Sigler's brother on TV | 36 |
| He played Shylock in 2004's "The Merchant of Venice" | 66 |
| He played Sherlock Holmes | 25 |
| He played Sheldon in "Misery" | 39 |