I'm wolfsamurai, your other moderator and mate of akomachi (natch). I've always been into myths and legends. When I was much much younger (around 8 years old) I read a book full of Greek myths until almost 3 in the morning because I just couldn't put it down. They were facinating. And to some extent I still have a soft spot in my heart for Greek myths. But my favorite new culture to study myths and legends from is the Norse (Viking) mythology. It's just really bloody nifty. I'm also very into Asian myths.
When it comes to writing I'm ~big~ on background for my story worlds. And that includes not only history but legends and myths as well. I tend to write longer stuff and I've got about 3 worlds that I'm building. One is a Japanese inspired tale, complete with (hopefully) Japanese flavored legends. One is a fairly standard fantasy world, inspired by some tales from D&D's Forgotten Realms. And the third one is a take on Christian mythology, dissassembled and reassembled in a very "What If" kind of way. In this particular case, what if the Jesus figure hadn't died for sins...but instead fought bloody battles for freedom?