I posted this in a different section regarding anxiety disorders but feel it is more appropriate here:

I have some OCD symptoms, which I believe are correlated to my cracking habits. I wonder if other avid crackers have OCD or OCD-like symptoms and if you think the two could be related. Some of the things I do are chew food the same number of times on each side of my mouth before swallowing, the TV volume has to be on an odd number, I only eat chips and other snack items in pairs (if only one is left over I can't eat it), and I avoid cracks on the pavement, but if I step on one with one foot I have to step on another crack of similar width with the opposite foot to "even" me out. I carry out a normal happy life but these few things really irk me! any thoughts?

It's a tie between shoulders and wrists, which I can crack 3 different ways!

I haven't seen a post dedicated to cracking hips, so here I go…I do this to each hip, one at a time: 1) start by standing up straight. 2) keeping one leg firmly planted, bow down while raising the other leg behind you (so you look like a see-saw when bowing). Remember to do this swiftly and do not bend the standing knee. 4) Switch legs. If anyone out there is successful, let me know! I "discovered" this on my own a few years ago. Expect a "pop" vs. a "crack".

I crack my knees like "gunit"…by standing up and twisting my knees left and right. This is the only way for me. LOVE IT!

I agree with you. Popping shoulders is the best. I can crack them many times a day and I love it! It's the loudest of all my cracks. People always give me an "Ugh!" look or say, "Doesn't that hurt?!" I get pleasure from it and don't see why I have to stop. The way I do it is by sticking my elbow out and forward just a bit, then thrusting it back as if elbowing someone behind me. Morning pops are generally the loudest.