Not keen on most of them. I can't stand random, uncoordinated tattoos or pointless words tattooed on the body. A perfect example is that twerp from Wand Erection who just keeps adding designs and words here and there on his body without any planning or thought. It looks a complete mess and will look even worse when he's old and wrinkly.
That said, I'm not anti-tattoo per se. Some of the large tribal designs are beautiful and will still look ok in later life. A mate of mine has a sleeve tattoo covering his entire arm - he took about two years thinking about it, working on the design with his tattooist etc., ensuring that there was a theme. It looks absolutely fantastic.