Street Fighter is a terrible movie by any measure, but from every account I've seen Raul Julia had a blast hamming it up. Can't fault him for that. He's widely regarded as the only good thing in the movie.
Yeah, it's pretty forgettable. But I like that Nimoy joins a small handful of actors that were in both the modern films and the original cartoon (if you count the 86 movie as part of the OG cartoon).
But yeah, that wasn't even his best voice acting role. Alas.