I drink a kefir smoothie nearly every day - homemade raw milk kefir, a little maple syrup, a few berries and whrrrrrrr.
I used to make yogurt but have found kefir so much easier to make and also more versatile. You can make it out of any kind of milk - skim, goat, soy - and use it in recipes in place of buttermilk or yogurt. Plus it has more pro-biotics in it than yogurt does, and there are other health claims made for it I'm less and less skeptical about.
I have an ancient (over 20 years old) cat who was on death's doorstep last spring when I started feeding her a half cup of kefir every day. Now her fur has grown back (she'd developed an allergy to her own saliva), her inoperable tumor is gone, and she acts many years younger.
Anyway, I was curious if there are other kefir converts out there?