Read or Die
Read or Die was released in 2001 as three OVA episodes, which means it has about ninety minutes to introduce a paper-wielding bibliophile, clone a collection of historical figures, threaten the world, and stage an action sequence over Washington that still looks expensive. It does all of that and leaves before the idea can wear out.
This was prime early-DVD and fansub recommendation material. Short enough to finish in one night, strange enough that the premise sold itself, and animated well enough that nobody had to apologize for handing it to a first-time viewer. The rooftop opening with the World Trade Center still in the skyline also fixes the production to a specific moment in a way nobody involved could have intended.
Three episodes. No franchise commitment required. The television sequel is a different thing and worth discussing later. Start here.
Guides and reference pages for this series. More coming.