The last and only Tarkovsky film I saw was the epic Andrey Rublyov from 1969. Vlad and tumbled down to the Cornerhouse to see this one, and of all the films I've seen, good and bad, I believe this may be the most memorable.
I probably wrote a blog entry about it at the time.
I now wake to discover that Amazon is recommending me Tarkovsky's Mirror from 1974 (based on my rating for Bergman's The Seventh Seal). With past experience in mind, I am unsure what to do.