While it will have some redundant tools, I absolutely love the Victorinox Signature II and Manager II line. These are the tiny knives that include pens in one side of the handle (in place of the fairly useless toothpick). The pen cartridges are replaceable, all metal and actually write very, very well.
I can't count how many times I haven't had to search/borrow a pen when I didn't think I'd have needed one. Of course, the small knife and scissors (and screwdriver/bottle opener on the Manager version) come in handy too.
You can also get the "Midnite" or "Signature Lite" versions which have...dun dun dundun....a red LED light as well instead of the tweezers. Its pretty decent for finding keyholes and barebones navigation with fully dark adapted eyes.
Edit: Quick question- The Prybaby looks good and I may want to get one, but they look a bit on the $$ side for what they are. I found them here:
http://www.moorecutlery.com/CustomKnives/atwood-peter/index.php
Is there a cheaper place to get them?