Death Note

I recently started watching this anime and i got addicted since the first episode, I think you guys should try it out if you like detective things and thriller.

Death Note (デスノート Desu Nōto) is a Japanese manga created by writer Tsugumi Ohba and manga artist Takeshi Obata. The main character is Light Yagami, a high school student who discovers a supernatural notebook, the "Death Note", dropped on Earth by a shinigami (a god of death) named Ryuk. The Death Note grants its user the ability to kill anyone whose name and face they know, by writing the name in the notebook while picturing their face. The series centers around Light's attempt to create and rule a world "cleansed of evil" as "God" using the notebook, and the efforts of a detective known as L to stop him. 

The Death Note anime began airing in Japan on October 3, 2006, and finished its run on June 26, 2007, totaling 37 twenty-minute episodes.

Naruto

This anime is the most popular anime in all world around, it's very amusing and if you didn't watched it yet you should do it.

Naruto (NARUTO—ナルト—, romanized as NARUTO) is an ongoing Japanese manga series written and illustrated by  Masashi Kishimoto. The plot tells the story of Naruto Uzumaki, an adolescent ninja who constantly searches for recognition and dreams to become the Hokage, the ninja in his village who is acknowledged as the leader and the strongest of all. The series is based on a one-shot comic by Kishimoto that was published in the August 1997 issue of Akamaru Jump.