Simple question.

I can crack my knuckles, toes, back, and neck.

My ankle cracks pretty good.

Neck, wrists, knuckles, toes, knees, elbows, tail bone area.... My penis... (I'm dead serious about penis. :P ) Back as well, err and ears and nose. and my jaw socket.

knuckles,wrists

Ankles, knees, knuckles, wrists, shoulders, neck, back, and sometimes I pop a little pocket of air that feels like a big crack in the center of my chest, like I'm cracking my heart or something. It only happens a couple times a year and it's really loud and hilarious.

My back, thumb joint, ankle, knee (when it is injured) and nose. I can also pop one of my shoulders.

My thumb, fingers, foot, back, wrist, ankle....I haven't tried many other places

Knuckles, Wrists,Ankles, knees. You shouldn't Crack your neck. It can cause a stroke :O

My Knees crack automatcally when I bend down, and have done since I was about 12.

My neck can make multiple cracking sounds on one pass, and can do it again immedeately after.

I can crack all the 1st knuckles and all the second knuckles on my fingers (and do so daily) and have once or twice cracked the very end knuckles.
The end knuckles of my thumb also usually daily.

I can crack all my toes (1st "knuckles" only) but usually only my little toe will accept

both wrists usually every morning.

Once or twice I have cracked my elbow by throwing my arm out as fast as I can, and by stretching backward I can sometimes do some back joints.

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I'm a wreck at 21.

Toes and fingers....thats all