I had to reinstall my PowerBook due to a security update glitch. After that, I noticed how awkward the out-of-the-box Panther configuration feels since I customized the user interface so much in the meantime. So far, I changed these (after a day): Install SideTrack so I can scroll and control Exposé by tapping on the trackpad Change access keys for Exposé (to F11 and F12) Install Wacom tablet drivers, make middle mouse button trigger Exposé Install Desktop Manager for virtual desktops Install Quicksilver for fast access to apps, contacts and bookmarks Install Peripheral Vision to show USB/Firewire/... device mounts/unmounts Move dock to right side instead of bottom. Still have to tweak it to be bottom-aligned instead of in the middle (forgot the name of the app to do it) Still have to retrieve my desktop images from my backup Install MenuMeters so I see the network traffic Some of these have become very strong habits. When using other Macs running Jaguar or PCs, I get quite irritated when there's a lot of windows and I can't use Exposé (I usually push the mouse to the top left corner to reveal the desktop and then wonder why nothing is happening ), or when I connect a USB device and there's no visual feedback. The funny thing is: When I first installed Panther, I felt Exposé is funky, but rather useless So what UI mods can't you live without?