Not a straight adaptation of Miguel De Cervantes' 17th Century Spanish classic, Gilliam's The Man Who Killed Don Quixote was originally set to star Johnny Depp as a time travelling advertising executive who teams up with delusional adventurer Don Quixote (Jean Rochefort) in 17th Century La Mancha. Then in 2010 it was planned that Ewan McGregor would be the suit, with Robert Duvall pointing his lance at the windmill. Whether that's still in the stars or whether we're looking at an altogether different cast is still unclear.
"We'll see if it happens," Gilliam shrugs. "This is kind of my default position, going back to that. I actually just want to make it and get rid of it. Get it out of my life! I don't know if it will be good or bad. The dangerous thing is that a lot of people are waiting for it, so I can disappoint a lot of people maybe."
It's no exaggeration at this point to call Gilliam's a Quixotic vision, so his strangely resigned determination is nothing but appropriate. Here's hoping it turns out not to have been, in the end, an impossible dream.
While we're waiting to find out, The Zero Theorem is released in the UK on 14 March next year.