http://www.wildmind.org/mantras/figures/vajrapani True Buddha School Net English Homepage
The first link is a little bit about him and the second is the meditation I tried. Again, I'm not really an adherent to any religion but I find the imagery associated with him and his theme of "virya", proactive and compassionate power or action, resonates with me. And it doesn't hurt that my inner child thinks that a giant blue man who likes being on fire is inherently awesome