Today? A plain edge Gerber Fast Draw and a mini Victorinox. On the Fast Draw I really like the pocket clip, assisted opening flipper design, and the fact that its sturdy AND cheap. I can thrash it and it should hold up; if it doesn't I'm not out much cash. The only thing I don't like is the safety switch. I would permatently disable it, but its also what locks the blade open. I didn't like the edge from the factory, but after re-profiling it's much easier to get sharp and stay that way.
I also have a drawer full of various SOGs, Kershaws, CRKTs, Gerbers, and even a couple Benchmades that I sometimes carry. Overall I think the Kershaws are my favorites.
Well for the most part it just looks really cool! It would also make a very large hole if twisted after having to use the blade, but the fork would assist the blood groove in removal of the blade from the person you just had to use it on.