I love filesystems. With a little parental planning, "filesystems" might have been my middle name. Then again, I might have been teased more at school. The following is a partially ordered list of filesystem links that I look at from time to time.
At some point, I'll have one of my own to show off -- as soon as I figure out which letters of the alphabet haven't been used already to name filesystems. (e.g. AFS, NFS, UFS)