yes, a simple apple script will do it. you don't need a fancy one.
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tell application "Finder" to activate
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is all that's necessary. or if you also want it to open a new window
<pre style="
font-family: Monaco, 'Courier New', Courier, monospace;
font-size: 10px;
margin: 0px;
padding: 5px;
border: 1px solid #000000;
width: 720px;
color: #000000;
background-color: #ADD8E6;
overflow: auto;"
title="this text can be pasted into the Script Editor">
tell application "Finder"
make new Finder window
activate
end tell</pre>
P.S. there is of course command+tab shortcut for the application switcher but you probably know this one.
