Inuyahsa is one of my favorites.

The story tells of the adventures of Kagome Higurashi, who can travel back in time through a mysterious well, and the half-demon, InuYasha, along with their companions Miroku (a lecherous monk who accompanies Inuyasha to defeat the demon lord Naraku, to rid himself of the black hole (Wind Tunnel) in his hand), Sango (a demon slayer wanting revenge on Naraku for the death of her brother and village) and Shippo (an orphan fox demon). The whole group travels together, seeking to kill Naraku as revenge and gather all the shards of the sacred jewel (Shikon no Tama, which was broken accidentally by Kagome) to keep them out of the hands of demons.