Haven't read the Uzumaki comic but liked the movie.
Junji Ito wrote that and also a great comic (and sequel) called Tomie. Tomie was made into a not-so-great film. He also wrote Flesh-colored horror, which is along the same lines as Tomie. All of them are worth tracking down.
I just found this, a FREE translation of the manga sequel to the Ring.
http://www.nensha.net/rasen.html