RTTS is very addicting. After each game you just wanna play another one just to get your stats and skill points up.
So yeah, the gameplay and graphics are cool. It offers difficulty levels that work well for beginners and experts. Hall of fame mode offers a very realistic life-like gameplay, and is challenging which makes it fun.
Now online play, it's pretty cool and competitive (sometimes ;)), but there is a bit of a lag problem. I don't know if it's just MY internet connection, but when that lag stuff starts happening, it sucks. It messes you and your opponent up and isn't any fun at all. But other then that, it's pretty cool.
So I highly recommend this game. I know it's after baseball season already, and that MLB 09 will probably come out, but MLB 08 was very impressive and is a game EVERY baseball fan should at least try out.