American Typewriter is pretty cool. I agree with gibbz- I would go with the font that Apple used in the original ads.
If you're getting ink on your wrist, make sure that you can easily cover it with sleeves (and that it won't stick out of your sleeve when you reach for something or shake someone's hand), and make sure you're not the kind of person that would want to wear short sleeves to work (or your future work). Although tattoos are more mainstream now, they are still frowned upon by much of the corporate and professional world.
I have tattoos, but I could never get one anywhere below the halfway point of my biceps. I worked for five years in the healthcare industry, and I know that my patients would not have taken me as seriously if they knew about my tattoos. In about a year, I am going to be entering the corporate world. My tattoos will remain hidden underneath the suits I will be wearing, but if I decide to take my jacket off and roll up my sleeves, none of them will show. Appearance is important.
Tattoos are awesome- especially if they have meaning to you and if they are done well. Spare no expense, do a lot of research, stare at your design for months if you have to. Find the best artist you can, because it will be with you forever.
If you live in Toronto, I can recommend an amazing artist.