Abel Gance, Napoleon, 1927
Just thought I’d add this given our discussion of the history of multichannel film and expanded cinema last week. The link is a trailer for the screening/performance that occurred at the Paramount Theatre in Oakland, CA in the spring of 2012. This screening/performance featured a 5.5 hour restoration of Gance’s original film screened a full-length orchestral score composed by Carl Davis, who conducted the Oakland East Bay Symphony Orchestra.
The most striking part of this film is the ending where Gance employs a custom designed, multichannel sequence. He called this technology Polyvision.
This article has some additional information about this screening/performance and this specific restoration of the film.