A copy of The Clock is co-owned by the National Gallery of Canada in Ottawa and the Boston Museum of Fine Arts. Look for it in Boston later in the year if you can't make it to Ottawa this summer.
In any event, don't miss it or at least part of it! It is a 24 hour movie after all: twenty-four hours of clips from hundreds and hundreds of movies of every genre, each referencing or showing the time...the current time as you watch the movie. It is shown in real time; that is, at real-time noon the movie reaches noon, and a certain crescendo builds. Think High Noon.
Brilliant movie. Years in the making. Worth every minute.