I love Terminal under OSX. I just wish it was easier to integrate the use of the Terminal with other applications. For example, I've got a finder toolbar scriptlet that starts a GraphicConverter slideshow with all images in the current directory. Now how do I start that from the Terminal? It's not as easy as I'd hope.
On a related note, this silly bit saves me so much time:
alias finder "open -a Finder"
:)
