I have now finished watching all of Yu Yu Hakusho — a series I had started years ago but never finished. This anime was excellent. In fact, Bleach was accused of being a copy of Yu Yu Hakusho originally, though I personally do not think they’re too similar at all. It’s 112 episodes long and here’s some more info on it:

Genres: action, comedy, drama, supernatural, tournament
Age rating: Teenagers (May contain bloody violence, bad language, nudity)
Plot Summary: One day, 14 year old Yusuke Urameshi suddenly finds himself dead, having died pushing a child out of the way of oncoming traffic. Since he has such a bad personality, even the Spirit World was caught by surpise that he would sacrifice himself. Yusuke soon finds out he wasn’t supposed to die and has a chance for resurrection and bringing his body back to life. After being resurrected, Yusuke becomes a Spirit Detective, along with his comrades, and one adventure after another happens, whether it be an investigation or a fighting tournament.

Information from: Anime News Network