I miss Ben, I have always enjoyed his performances and humor. His most stand-out role, of course, was John Crichton in Farscape. In Farscape he was a lost man in the first season and by the second season he was knowledgeable, strong and very humorous. This became the core of his character throughout the series and whenever given the chance he even amped up the sexuality, something most Sci-Fi shows lack dearly.
Later, he was cast in Stargate SG1 but was never really the same or I never felt like he gave the same "quality" of performances as he did in Farscape.