Yes, pretty cool. And I like how they do the transition between Flash and regular HTML content. Most of the things you see are in fact not flash but JavaScripted HTML. Only the "Add Field" section, the tabs and the header is Flash.
<br><br><br><div><span class="gmail_quote">2006/2/25, Theodore Serbinski &lt;<a href="mailto:tss24@cornell.edu">tss24@cornell.edu</a>&gt;:</span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<a href="http://wufoo.com/demo/">http://wufoo.com/demo/</a><br><br>Very cool, written in Flash though but the interface is awesome.<br><br>ted<br></blockquote></div><br>