Initial D all the way. Every season gets more exciting for me and I cant wait for them to make a new one *shakes fist* you better make a new one I wanna see the Evo V vs Keisuke in Kyoko's FD battle and I wanna see the new bodykit put on the car. I have watched 1st to 4th Stage so many times I have lost count.
Other than that I will go with the popular choice of Naruto but it has points where it gets dull and then picks up again. Its like an emotional rollercoaster