Does anyone know whether he acted in any more films?
Just see list of films here Владимир Высоцкий в театре и кино — Википедия

Also I have a DVD called "В. Высoцкий. Мне есть что спеть" - it contains from video fragments with Vysotsky (songs, concerts, interviews e.t.c.), it's quite interesting. I think, you can find it on torrents. But I don't know if subtitles for this DVD exists.

And of course, Vysоtsky is great!