#13: Steven Kampmann as Kirk Devane
Kirk Devane was the slightly neurotic, self-absorbed owner of the Minuteman Café — and one of Newhart’s earliest and funniest supporting characters. Steven Kampmann played him with a mix of insecurity and bravado, turning every awkward interaction into gold. Kirk’s constant need for validation made him a lovable, if exasperating, regular.

As part of the show’s original ensemble, Kampmann gave Newhart its early spark of small-town eccentricity. His deadpan reactions and offbeat delivery helped shape the series’ quirky rhythm before the show introduced later characters like Michael and Stephanie. Though Kirk left after the second season, his presence lingered in the show’s DNA.
