Here's my list:
Al Mar Sere 2000 - Does all I could ever ask a folder to do. It's heavy duty to the max, and probably my second all time favorite folder.
Spyderco Military - It's light but strong! The ergonomics are great, the materials are great, and the full flat grind cuts like a demon. It has slowly become my favorite folder. Like Buzz said, I put it down, but I KNOW I have to pick it back up. There's no other knife out there like it.
Victorinox Tinker - Just a great knife to have around. It has useful tools and doesn't take up a huge amount of room in the pocket.
Busse Basic 9 - This is my baby. I call her "Black Betty"! I get a lot of pleasure out of using this knife because it only comes out to play when there's BRUTAL work to be done. If I need to collect firewood, build a shelter, chop anything, smash anything, pry anything - this is the knife!
Trace Rinaldi L.E.O. - This is just a beautiful knife that is a real worker too. The blade has a really sweet recurve to it that cuts like crazy! This is the second Rinaldi knife I have owned, and one thing's for sure, Trace knows how to build one hell of a great knife. I like taking this one along on camping trips.
Greco Companion - A tough knife with a capitol "T". I carry this knife as a beater and it gets used for everything. This is the knife I can get the absolute sharpest out of all the knives I own - that A2 steel is some great stuff.
Allen Blade MEUK - This knife is very special to me since my wife bought it for me for our last wedding anniversary. (I know, she's a good girl!) This knife was so pretty when I first got it that I didn't use it for months. I did finally use it and it's an excellent slicer. It gets used a lot in the kitchen and is well on it's way to developing a deep, rich patina.
Kershaw Chive - My work knife. I can't carry anything longer than a 3" blade, so I figure the chive is well within the limit. It does anything I need done at work with ease.
Leatherman Squirt - I have this thing in my pocket at all times. It has lots of useful tools and only takes up as much space as half a pack of gum.
Sabre Brand Barlow - My father bought this knife at a paint store more than 30 years ago. He has used it for lots of stuff - cutting open packages, cutting apples and sandwiches, cutting rope, whittling, but mostly he said he used it for cutting and stripping wire. It has a lot of history, and it is a well made knife that continues to work for me whenever it finds it's way into the rotation.
I really think I am getting to where I have all I need. I have sold off everything I don't use, so the knives I have all get plenty of carry time. Unfortunately I feel like that's a good thing. I've got more knives than 10 people could use up in a lifetime. I have become content with what I have. That way I can spend a little quality time with each piece.