This site is a great source to find other graphic designers blogs. It lists the top 50 graphic design blogs. It is an easy way to see other designers work and see the inspiration that they find.
I enjoy seeing what other designers find and this is useful. It helps me come up with more ideas for projects and pushes me. When I find something that I would like to somewhat mimic, I have to be able to figure out how it was done and try to duplicate it in some way. It feels very rewarding to come up with something that is new and fresh!