Schluter!! You've heard about it. Here are some examples of where it can be used.
Schluter is the brand name of the company that makes trim pieces for your tile. Not all tile manufacturers make "bullnose" tiles, or pieces with finished edges. Schluter trims give you a very elegant and unobtrusive alternative.
You can select either metal edges or plastic edges in a wide range of finishes. They come with square or "L" angles, or you can get the traditional rounded or "bullnose" edge. They even have stair edging and countertop edging.