I first noticed him with other series HART TO HART. T.J. HOOKER, CRAZY LIKE A FOX or DARK JUSTICE way before X-FILES. Only later learned he wrote one of the more unknown STARSKY & HUTCH themes, too. And of course only via Michael Kamen I learned of his band New York Rock Ensamble later.
Not familiar with all he did since X-FILES, but he had at least two long(er) running series incl. the theme after that:
- GHOST WISPERER
- BLUE BLOODS (edit somehow just learned the theme is actually by Rob Simonsen! But Snow for sure did lots of episodes)
And he also scored a couple of Alan Resnais movies but I am not familar with them.