 Ken Tucker summarized Hartman 's comedic style : " He could momentarily fool audiences into thinking he was the straight man , but then he 'd cock an eyebrow and give his voice an ironic lilt that delivered a punchline like a fast slider — you barely saw it coming until you started laughing . " Hartman claimed that he borrowed his style from actor Bill Murray : " He 's been a great influence on me – when he did that smarmy thing in Ghostbusters , then the same sort of thing in Groundhog Day . I tried to imitate it . I couldn 't . I wasn 't good enough . But I discovered an element of something else , so in a sick kind of way I made myself a career by doing a bad imitation of another comic . " 
