wich version of kanon you watched? kanon 2002 or kanon 2006?
might suggest that you watch Air also, also made of Key (made clannad and kanon). Only 13episodes tho. (OvA's not included)
You can also try Kimi Ga Nozomu Eien, 13episodes long and also like clannad,kanon,air. There is also a seaso 2 of it but thats just 4episodes long, wich reveals more of the story of one of the protagonists. You can also watch Akane Matrix (something like that), wich is a spin-off serie (4eps) about the sister of one of the protagonists.
@ Neichus, i'll watch both the season's probs and will report back of what i think of them
@sorrior, forgot to mention MM!, the dbz reference episodes are soo funny i keep rewatching the series.
seems some sites are saying there's gonna be a ZnT season4 in winter 2011 or in 2012 but we'll see about that.
I do know that Code Geass is going to get a season 3 but that's probably gonna be a spin-off (I hope so, as the serie ended very good, and they could just fuck up the story with s3)