I'm not a Keanu Reeves fan at all, but Linklater's work interests me. This is based on a Philip K Dick story, and looks... well... interesting.
http://wip.warnerbros.com/index.html?site=ascannerdarkly
or check out this longer trailer:
http://www.apple.com/trailers/warner_independent_pictures/ascannerdarkly/trailer2/
http://wip.warnerbros.com/index.html?site=ascannerdarkly
or check out this longer trailer:
http://www.apple.com/trailers/warner_independent_pictures/ascannerdarkly/trailer2/