I know there's a post on negative reactions a few lines down from this topic, but I've had more good reactions than bad ones. Actually, the most surprising has been my parents. They're both quite conservative, but over the past few years they seem to have realized that my fascination with body mods isn't going to die off so they've come to a point of acceptance and almost encouragement.
My mum came with me a few years back when I got my nipples pierced despite her initial horror, and for my first two tattoos, my dad came with me. I'm pretty close to my parents, and they've accepted me through all of my choices (phases or otherwise). I've had roughly a billion piercings (

I thought stretching my lobes would be a bit much for them, but I was soaking my lobes the other day in these awkward little shot glasses (which I'm sure looks hilarious to everybody who sees me doing it) and when I took them out to the kitchen to wash them, my dad looked at me and said "Oh, are those for your earlobes?" and looked at my ears, then said "Cool." I know he doesn't like it, but the fact that he accepts it as something that I love was kind of reassuring.
Obviously I'm a huge nerd for all this but I guess I just wanted to share.