The celebrity atheist list is just what it sounds like: a large list of notable atheists. I recently commented at Dedroidify that atheists are not all jaded office workers and evil scientists, but many are artists, writers, etc. I think everyone will find a few people who enhanced their lives.
Here are a few of my favorites:
Theo van Gogh
Sir Ian McKellen
I would add to the list Haruki Murakami.
(And of course, one could write such a list for every major religion. My point here is that spirituality is not required for creativity and inspiration.)