It's really a matter of taste. I've seen bad ones and good ones. Generally I liked them better, as long as they're not centered and symmetric. I.E. I like them on arms, legs, shoulders. I dislike them on bellies or backs. Oh and on wrists, seems a bit too emo(tional) for me.
It reminds me also of one episode of Craig Ferguson where he stated, you always should have an odd number of tattoo's. 1, 3, 5 are fine; but never have 2 or 4 .. Not sure why but it makes sense to me.
Anyway, it does make for good pillow talk food. "What's the story behind your tattoo? You .. liked .. Buffy the Vampire slayer? .. oh. . okay"