You can watch "The Modern Prometheus" episode (of Highlander) from May 1997  here:
https://www.youtube.com/watch?v=lf3KbhfefvI (in English)
https://www.youtube.com/watch?v=xr1a7Fn3x6o (In Italian)

Jonathan as Lord Byron (a poet and a rock star), a brilliant mind feeling dead inside, who is pushing things to the limit.

As a teenager, I watched some episodes of the Highlander television series in the late 1990s during the show's popularity. It was my second time when I noticed Jonathan for his good acting (the first film was "Wuthering Heights").