Footage from the Melancholy of Haruhi Suzumiya has been cut and edited to match the introduction to Kyoto Animation's other series, the currently airing CLANNAD.
Aptly named HARUNAD, this video will surprise you with the shot-for-shot matches and backdrops. I didn't expect that there would be enough Haruhi footage to make this work, but it really does. It was probably pretty easy after seeing that both series had the barred, letterboxed backgroud-with-character-overlay shots. Either way, good job.