Personally, I find self-obsessed artists exasperating though I agree the Guinness was excellent (but for my taste, his best role was as George Smiley in the exquisite le Carré adaptations).

He's excellent, as are even the small roles in those series. I haven't seen Smiley's People in a couple of years, but I own and not infrequently rewatch Tinker, Tailor, Soldier, Spy. I can't believe they're remaking it as a movie; I can think of more unnecessary remakes, like The Wizard of Oz, but in sheer terms of why?, this one is high on the list.