Well I just had an eye-opening experience… My dock was acting weird (not showing open applications) so I thought I'd open terminal and do a killall to restart it. Yep, dock disappeared; Waited… waited… it didn't reopen. Well why the heck not? So I figured I might need to restart Finder to kick it into gear. So… a killall on Finder… …Uh oh. It didn't reopen! I started panicking: "Run Finder", "Launch Finder", "Open Finder" — nothing worked!! I even tried "killall Finder" a second time only to receive the poignant response, "Process not found". Luckily I knew I had a Safari window open somewhere, but I still needed to get to it. So I pressed Exposé all windows… nothing. Okay, clear all windows… nothing. Of course, Finder was gone, so I couldn't use Exposé. Okay, let's cmd+tab to switch to Safari… nothing, nothing was working! I couldn't even minimize the other windows! Eventually I manually dragged all the open windows and apps out of the way (haven't had to do that since the 80s). Phew, Safari is still there… quickly type into google: "how to launch finder" — All results just said to use "killall Finder", and I know that wasn't working so: "where is Finder". …Oh, okay, it's located in System/Library, just need to get there now… so I instinctively moved my cursor down to click on the Finder ico… d'oh, of course: no dock. I'll have to get there using the HDD icon on my desktop; dragged the Safari window out of the way - my desktop was bare: no icons at all! Of course — Finder was dead! How do you access the file system to fix Finder when you can't use Finder!? What do I do now?? I sat for a few moments looking at the blank space of the dock and the empty desktop, pondering the impending doom of a restart and losing everything I have open… Then I remembered… Aha! I still have that terminal window open! So I sifted back through my windows again, dragging them to the sides like it was Windows 3.1, and eventually found the open terminal window. Rapidly typed, "System/Library/Coreservices/Finder.app" - ENTER… Heard the CPU spin and my desktop was suddenly flooded with icons again. YES, we're back in business. Another quick command and Dock reopened, saving the day once again! I wanted to post this as it made me realize how much most of us rely on the Finder, Exposé, and even the much taken for granted: minimizing. Try surviving without those for a day — even 5 minutes — and you'll very quickly find out how important they are!