Writer's Block

This is one of the most commonly discussed topics among writers. Like hiccups, writer's block is annoying and has several cures which may or may not work. Everyone has an opinion, and some claim to never have suffered this malady.

I hadn't until recently. The fog is gradually lifting. The cause, I think, is that I have too much on my mind. Once some obligations are fulfilled, I expect my fingers to leap onto the keyboard and hungrily type out one story after another.

My question is, What do you fo for writer's block? Have you ever experienced it, or are you among the lucky few who seem to be immune?