Having begun his career as an extra in theatre-productions, Hamilton first appeared on film in 1913, doing various uncredited roles in one-reel comedies. A year later, in 1914, he teamed up with comedian
Bud Duncan, and for the next three years the two performers appeared as comedy team
Ham and Bud in numerous one-reelers produced by the
Kalem Company. Hamilton and Duncan split up in 1917, Hamilton joining
Fox as a solo performer. During the next few years he developed a distinct comic persona, appearing as a slightly prissy, overgrown boy often wearing a checkered cap. By the early 1920s, Hamilton was considered a major star of short comedies.
Buster Keaton in an interview praised him as "one of the funniest men in pictures," while
Charley Chase, who early in his career had directed Hamilton in a number of short subjects, stated that he would often ask himself "how would 'Ham' Hamilton play this?" before shooting a scene. His films often have surreal touches: in
The Movies he tearfully bids goodbye to his mother to go to the city, turns his back on the family farm, and steps directly into the city which is right next door. In
Move Along he neatly lays his trousers in the street, to have a steamroller press them. . By 1924, Hamilton had become popular enough that it was decided he should do the transition to feature-length comedies. The five-reel comedy which resulted,
His Darker Self (1924), was a flop both with critics and audiences, and Hamilton hastily returned to making two-reelers. After the failure of his first feature-length film, coupled with an increasing alcohol addiction, Hamilton is reported to have become more indifferent to his career, and his films from the later silent era are often considered more uneven in quality than his work in the early 1920s. In 1927, Hamilton was in a speakeasy when a boxer was murdered (Hamilton was not a suspect), and after the incident the motion picture authorities banned him from pictures for over a year. By 1929 he was back on screen in talking pictures (his speaking voice being a nasal tenor that fit his finicky screen character) but his continued drinking affected his health. Hamilton's last starring series was a string of two-reel comedies produced by
Mack Sennett. He continued to play the hapless victim of circumstance, as in
Too Many Highballs where Hamilton tries to park his car and keeps getting boxed in by motorists. When the Sennett series lapsed, there was talk of Hamilton joining the
Hal Roach studio, but Roach knew of Hamilton's notorious alcohol abuse and declined to hire him. Hamilton's facial features had acquired deep lines and hollows from heavy drinking, and he no longer looked like the "overgrown boy" in his final films. Relatively few of Hamilton's silent films from the 1920s survive; they were produced by
Educational Pictures, which suffered a laboratory fire in 1937. Those of Hamilton's films that do exist are often prized by comedy collectors and silent-film enthusiasts. ==Personal life==