I'm new on here, so for the purposes of introduction I can crack all joints in my hands, my neck, big toes, but my outright favorite has always been my jaw. It only ever works on the right hand side, and I achieve it by tensing and moving the lower half slighlty inwards very quickly.
I often describe the feeling as being like a thousand sewing needles bursting outwards from within the cartiledge in a split second, and produces a very sharp sound which is unlike any standard crack I have ever experienced.
Anyone else have experience of this?