I gave a presentation at the North Houston .NET User Group a couple weeks ago entitled "Rails Intrigue". My friend, Claudio Lassala recorded it and posted the video on YouTube.
In the presentation, I tried to give a little glimpse of what it feels like to build an application with Rails. I also tried to convey a little of why I think Rails is just Fun.
I think it went pretty well, for being mostly off the cuff. Give it a watch, and let me know what you think.