Alright, here's the exhaustive list:

• Intelligent Touchpad: Most of the laptops I've used have very annoying pointing devices. This MacBook Pro has a spacious pointing area and, once you get to know it, the easiest-to-use functionality possible. Want to scroll? Anywhere on the touchpad just hold down two fingers and scroll in the direction you want to go. Want to right-click/CTRL-click? After enabling it in mouse preferences, hold down two fingers and click as well.
• Zooming: Anywhere in Mac OS X, I can hold down CTRL and use the scroll wheel/fingers to zoom in and out. That YouTube video just too small? Zoom in at it and it'll fill up as much of the screen as you like. The screen pans around as you move the mouse, and it's great for reading things when you can't get up close (or just don't want to).
• Unix-based: Your file permissions not acting correctly? Open the terminal and look at the permissions via good ol' ls. Install the developer tools off the OS CD and all you Unix hackers can compile your own version of just about anything. Plus, like most distributions of Unix, it comes with all the necessary tools.
• Dictionary: Mac OS X has an address book and calendar built into the OS for plenty of nice integration, but, of course, why not a dictionary central to the OS? Mac includes a full copy of the Dictionary and Thesaurus, which are available with one click.
• Windows-friendly: I still run my old computer and even store most of my files on there, and that causes no problems with the Mac. Connecting to Windows and Linux SMB shares works flawlessly, and with the right passwords and the power of Hamachi, I can get my data from anywhere.

Why I Like Mac OS X Leopard

• Boot Camp: This is the official 1.0 release of Boot Camp, and it was probably the nicest implementation of Windows I've seen on a PC. After setting up your partition and booting into Windows install, just pop in the Mac OS X install disc and install a complete package of Windows drivers. The one Windows install includes an app to switch back to OS X as well as drivers for your monitor, keyboard, and mouse (and it includes all the fun mouse stuff like finger-scrolling). It's like all the nice features of your laptop but still running Windows if you need to.
• Spaces: The only thing better than having a nice monitor is having two monitors to work on. You can't achieve that on the road with a laptop, but with Spaces, it's the next best thing. Spaces gives me 4 separate desktops accessible via simple keystrokes. I have e-mail/chat in one space, web browser in another, iTunes in a third, and a development environment in the fourth (if needed). There's even a keyboard shortcut that will show all the spaces where you can then move windows from one space to another. Programs can be assigned to a space, and if you switch to an app that is only in another space, it'll zoom over to that space automatically.
• iChat: It's the little things in the new iChat that I like. I can share documents even with people running older versions of iChat. If someone has a link in their status, iChat now gives me a button to click on. Most of our paint colors at home are too close to skin color, so the backdrops don't work well, but they're still kinda fun.