I started a thread on this subject about twelve months ago, and it went down quite well. I distinctly remember someone making a rather amusing comment about their knees sounding like a bag of firecrackers going off as they walked down the stairs in the morning.
Do your bones crack? Do their crack all by themselves, or do manipulate them to do so?
My knees crack (especially the right one), my fingers occasionally crack, and my neck sounds quite unhealthy when I move it into certain positions.
Please vote in the poll provided. Thanks.