Clannad, Toki wo Kakeru Shoujo Recommendations
They are both romance with a bit of another genre. The romance is heart warming and when it seems like they are going to end there is a bit more. I feel that at times I lost a little interest in Clannad but the ending made up for it. I recommend the Dub for The Girl who leapt through time (if you like dubs that is) but I don't recommend the dub at all for Clannad (try to watch sub, you could probably get though Clannad on dub but once you get to After Story the dubbing cast gets worse).