I can crack almost every single joint in my body...and a couple non-joints :unsure:
let's see.....toes, ankles, shins(yep. shins.), knees, hips, back, neck, shoudlers, elbows, wrists, fingers, jaw, sternum (thats the one that creeps me out :unsure: ) Some I can crack endlessly, my shins being one. Others won't crack endlessly, but very very frequently.
long tongue.
*resists urge to make many crude jokes*