Most of today's iWonder will be in my email to you to help you navigate some technical glitches. But, as we are all now on Lion, here are some of my favorite things about it:
1) Mission Control
If you tend to keep a lot of things open, you can click on Mission Control and see everything you have open. You can also create multiple "desktops" and have different applications open on each.
2) Air Drop
This is something I haven't used yet, but if you share files a lot with your team, then Air Drop is a better solution when you can't email a large file. You just open up Finder, see all the nearby computers with AirDrop enabled, and you can send files just by dragging them onto a computer's icon. AirDrip will create a network between the two computers and transfer the files for you.
When you shut down your computer, you can choose to save your session, so when you turn your computer back on, it restores all your windows, exactly as they were when you shut down.
You can find out more about clicking this link to a Lion/Laptop Guide.
(You'll need to be logged into the district website to access it.)
Feel free to ask if you want to learn more about them!