One of the few that can be played on a US player I found through Netflix; it's a crazy collection called Visions of Frank. Basically, Japanese animation teams join forces to create cartoon shorts based on the Frank comics by Jim Woodring. If you don't know Woodring, just imagine Felix the Cat falling into a Salvador Dali painting and ingesting a big pile of acid tabs. It's twisted, surreal, often non-sensical stuff that ranges from complete idiocy to sheer brilliance.
The animation collection runs the full gamut of techniques: hand drawings, computer animation, stop motion photography....even magnetic sand paintings. The one I linked to at the bottom is my favorite off the disc, probably because it seems like an old-style cartoon gone completely awry.
As wonderful as this stuff is, I can't imagine using these to set the tone with 50 librarians. I think they're expecting something more along the lines of Pokemon, not something plotless and brilliantly nuts like this stuff is. It might work, but I think I'll keep looking for some alternatives that aren't quite so far out.