I gotta agree with OP, sports anime are excellent entertainment. Some are funny as hell (Slam dunk), some really motivate to train (for me Hajime no Ippo) and all are teaching team spirit.
I mentioned my favorites but I like Kickers, Ping Pong, Major, One Outs, Giant Killing, Hungry Hearts even Prince of Tennis, Eyeshield21 and Buzzer Beater to a lesser extent. There was another one that was great... aoki densetsu shoot (subbed by saizen); it's about a school team of football (soccer) players with some love triangle thing but even a touch of tragic and all. Just lovable characters and story. (Also, I have to rewatch Hikaru no Go now that I have a _real_ understanding of Go)
Man, I love sports animes. Easily my favorite anime genre.