Try to see Tarr's movies on film. Except for the last couple that got Bluray releases there are only horrible quality DVDs available. But they come around on 35mm in cities like NY somewhat routinely.
When Turin Horse came out I saw it at the NYFF (with an hour long talk in a small room with the director) and then another 3 times in theaters afterward. I've been lucky to catch Satantango and Werckmeister on film.
Tarr also mentored a young Chinese director, Hu Bo. His two works are very good: An Elephant Sitting Still and Man in the Well. Tarr came out to TIFF to introduce and eulogize the latter with an impassioned speech.
edit: Forgot that Criterion finally released a new edition of Werckmeister recently.