Here are some suggestions:
One Piece (Funimation's Dub)
Clannad & Clannad After Story
Chobits
The Slayers
Hajime No Ippo
Kaze No Stigma
School Rumble
Rideback
Pumpkin Scissors
Darker Than Black
Ouran High School Host Club
High School of the Dead
Kenichi The Mightiest Disciple
Xam'D Lost Memories
And I'm gonna stop there for now. If I were to write nearly everything I thought was good then it would be as long as a book.
Another good list, probably a bit closer to what he seems to watch save for Clannad. I don't watch a whole lot of the shounen battle stuff so I'm more rusty on that.