Who is your favorite 'shounen' mangaka?

Gotta go with Eiichiro Oda on this one. I love One Piece so much and the work he does is amazing. Plus I love how he manages to connect the smallest arcs to something way later on, in this case I'm talking about the Laboon arc connecting to Brook becoming a crew member with Luffy.
I've not kept up with it for a while, but then again I've not kept up with a lot of Manga or Anime for a while, too busy with work, school, and Let's Playing.

 

Hirohiko Araki (Jojo), Jojo is one of the best (if not the) mangas I've ever read, Although I have great love for Kishimoto as well

 

I'm not really that into shounen manga. I find that the action/adventure/sports/etc. genre is better suited to anime, even when it's an adaptation. I remember liking the Yu-Gi-Oh GX manga, though.

As for my favorite artist, I like Puyo for his work on The Disappearance of Nagato Yuki-Chan. It's not shounen, but I think it's still relevant.