I carry a Leatherman Multi-tool and a SOG Flash II Tanto on my person. The multi-tool gets a LOT more use than the Flash, but there are times when the SOG blade comes in very handy for larger cutting jobs.
Or, like the other day, I was removing some stickers from the back window of a car I had just purchased for my son, and the shape of the SOG Flash blade (and the incredible sharpness) made peeling off those stickers a breeze.
The Leatherman's Screwdrivers and Scissors get used a lot, along with the blade for quick things and the pliers are very good too, although a little small sometimes for simple things like tightening up a garden hose....