Caligula: The Ultimate Cut is deservedly being treated as an event.  This restoration of the provocative 1980 swords-and-sandals historical drama is currently being screened in 4K Ultra High Definition at select theatres as part of an exclusive roadshow.  The movie is the epitome of a re-imagining;  a perfected cut that scraps all of the footage from the box office hit in exchange for a shot list of different angles and takes, as well as using…