From the Tate Modern website:
The event runs all night but ticket holders can drop in and out. Food and drink will be available during the night. Feel free to bring a sleeping bag.
Advance ticket holders may arrive at any point.
To mark the twentieth anniversary of his death in 1987, Andy Warhol’s (1928–87) first ever film, Sleep 1963, is screened throughout the night, accompanied by the legendary musical performance that inspired it. The five and a half-hour film will be looped to provide over eighteen hours of continuous viewing, and is a meditative study of the poet John Giorno asleep in his apartment. [...]
Official Website: http://www.tate.org.uk/modern/thelongweekend2007/9028.htm
Added by bru on May 25, 2007