I found a small interview with Junji Ito on youtube and he talks about the manga and the movie Uzumaki a bit as well as a little bit about his other horror manga.
Also to add to Leon’s link about the Uzumaki movie, here’s a link to a review for the movie. Beware: there are images from the movie and some are a little graphic.
As for Wilfred Santiago, I found his official site if anyone is interested. You do have to click around a little as when you first get to the site it’s blank. Although there doesn’t seem to be much on the site.
I love these sites I wanted to add the following sit its http://www.onemanga.com its where you can get volumes 2 and 3 of uzumaki for free. If you really like his work I would also recommend checking out the manga/movies Tomie aout a girl that cannot e killed.