I can get:
Three in each finger– two from the knuckle and one from the joint in the middle
One in each thumb
Two in each wrist, just by pushing down on it when I feel pressure
One in each elbow
One in each shoulder
One in each hip
One in each knee
One in each ankle
One in each toe, excluding my big toes
And two in each of my big toes

That's fifty-two cracks total, in one round. I can repeat all of them about three times a day, except for my fingers, which I can crack at almost hourly intervals. I don't even want to bother to total all of those up.

I take a shower first thing in the morning, and right after I get out, I crack every bone in my body that I can. I start with my fingers and wrists, then go to my elbows, my shoulders, my hips, my knees, my ankles, and then my toes. It's become just as important and restorative to me as the rest of my cleaning process!
Unfortunately, I can't crack my back or my neck, and it sounds like all of the rest of you consider that a big part of your routine. Some of you can even crack your sternum! I'm super jealous.