I'm thinking of doing some pixel art for fun. Some time in the far future they may appear in an RPG when I learn to program better, but for now it's for fun. Any good tutorials?

Best way is to learn off other pixel art, such as SNES art.

http://tsgk.captainn.net/index.php?p=subhierarchal&t=sy&t2=ga&sy=8
http://www.nes-snes-sprites.com/

Pixel Joint is a good place to go for help.

http://www.pixeljoint.com

Practice, practice and more practice!

As previously mentioned Pixeljoint is a good place to look up for help and tutorials, along with Pixelation and maybe PixelDam. So you want to be a pixel artist? is a good tutorial to start with.