Kershaw 1620. The current one is the partially serrated frame lock model. It used to be the regular version with the same blade. It goes where I go. The blade is short enough for me to carry everywhere in California except courthouses and airplanes. Military bases, federal reservations, schools to pick up the kids... Because it's blade is under 2.5 inches, it slips through just about every loophole. Besides that, it is a great knife that handles anything I need it too.
-Mb