You'll want to watch fullscreen for readability.
Which web development framework is the best? I can tell you this: Symfony gets the job done fast.
Last week Alex and I took part in a panel discussion of web frameworks at the
Wharton UI Conference. I had half an hour to kill beforehand, so I decided to build a web application with Symfony. I had time left over to play with the CSS and demonstrate the power of layout templates. After we returned I went upstairs and made a screencast while building the app once more.
I made a number of educational mistakes along the way, so I included those along with their solutions.
Is this a full-fledged practical web application? Not quite— there's no user management, for one thing. But that's a topic for another screencast. Be sure to comment if you'd like to see additional installments.