There's only two things that gave me more feels than KS.
I'm supposing everyone knows about Eureka Seven? Overall it's not a very feely show, pretty dramatic. But there is one part that hits me harder than ANYTHING I've ever listened, read, etc. Ever.
http://www.youtube.com/watch?v=lnVUrq_EW8w
This takes the cake in terms of feels I have felt. Every single time I hear that sentence, I burst into tears no matter what I'm doing
Also, just below that is a little known anime called Blassreiter. Manly Tears were shed and feels were felt....
thoughout the ENTIRE anime. I find the story beautifully written, other than the fact that
only two of the massive cast of main characters throughout all the arcs actually survives to the end.