Naruto, Yuu☆Yuu☆Hakusho Recommendations
Both are shounen mangas that are pretty childish in the beginning and become more serious at some point. Both have a stupid main character who grows up during the story. They also have a lot of cool fights and a scary amount of supporting character who usually have a background story, so the reader is very likely to find his favorite character. Both of the series have a simple plot and simple art, and they're both the classic way-too-long shounen mangas, but they never get boring!
you will love yu yu hakusho if you like naruto. it has the same intense-ness, action, and suspense as naruto. You will find yourself glued to the computer screen or book as you read yu yu hakusho dying to know what happens next. so READ IT
I find strange that most ppl think it looks similar to Bleach, because for me it have a heart of Naruto. Both main characters smiles a lot, but sad inside, while Ichigo is pretty grim all the time (at least he trys to be grim). Both use mostly hand to hand combat with techniques based on allocation of ki and overall story flows in the same way.