Community controlled languages - Perl - PHP - Python
Writing large scale Javascript/AJAX applications with a large group of developers is very difficult. Using a strongly typed language with built in testing capabilities and real time debugging via a GUI IDE may be the answer. Come and see how GWT can be used to write AJAX applications.
Now that you have written your large AJAX applciation your customers find it a little slow to load, locks up your UI (Javascript UI is single threaded) and is not available on the train - well Gears is your answer. Come and see a simple demonstration of offline applications.