I'm a big fan of Hulu. They can satisfy a lot of my anime "needs". A lot, but not all.
If it's not on Hulu, I turn to the library. The downside to using the library is that, well, it's a library. People have already handled these DVDs, and they didn't handle them carefully. So far, three of the series that I've checked out have had scratches that made the discs skip and freeze. It's annoying, mostly because I had to pay a dollar for each set of faulty discs.
So, I'm beginning to think of starting my own anime collection. The problem is, where can a person on a budget get some good anime? I'd think Best Buy, but in a previous post, TimeChaser made a comment about how their collection has dwindled. Besides, their prices are kind of crazy. Are there any other good stores (either on land or online) that sell anime for a good price?