OK, I am by no means an expert with OSX, especially the new Leopard. I also know there have been a lot of new features added with this latest release of OSX so I could have very easily missed this one but when I stumbled onto it I thought it was really pretty cool.
If you select a file and hit the space bar you get a nice preview of the file.
If you do this while you have a folder selected you get some good information on the folder such has folder size.
And just as an FYI, you don’t even need to be in Finder to do this trick. You can do it directly on the Desktop. Just select something and hit the space bar.
Just one of many cool features I didn’t realize lived within Leopard.
Update: Finally found the name to this feature, Quick Look
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