I don't simply have Writer's Block, I have Creator's Block altogether -- I find it difficult to create anything, be it writing or artwork. Sometimes I force myself into it, other times I seek inspiration from music, feelings, past experiences, etc.
Once, about four years ago, I had to write a paper for a teacher. Luckily, though, the teacher handed us a piece of paper with a series of sentence starters on it. I don't remember what it is she really expected out of us, but instead of doing what she wanted I chose to do my own thing completely off topic. I used every sentence starter she had, and simply added whatever popped in my mind at the time. It was complete nonsense, but at the time it was a relatively good paper, which was something that many people enjoyed reading.
I still have it somewhere. I believe I found it on a floppy disk and saved it to my hard drive, as a matter of fact. If anyone is interested in what I had to say in the eighth grade, let me know, and I will share with you my writing