Don't you love it that you can look at directories two different ways?
Here is a script for "open finder window here": http://www.entropy.ch/software/applescript/ by Marc Liyanage.
For traffic the other way, if you drag a file from a Finder window into a Terminal window, its path gets copied under the cursor.
Come to think of it, if you type open ., a finder window will open on the current directory
This file is part of Victor Eijkhout's OS X notes.