Yay! CLANNAD 01 Widescreen was aired by bs-i! Too bad it wasn’t in true HD quality :(, but hey, it’s 16:9!
Out of boredom, I spent an hour doing comparison shots between the normal pan-scan version and the widescreen one. Be warned, the following post is not 56k friendly :P. Click on each picture for the real deal version. All the widescreen shots were downscaled to 853×480 to facilitate easier comparison.