Web Framework presentations

Because of a) my job, and b) one of my classes, I've been looking at web frameworks a lot. I still have yet to decide on which one to use for the job, but one thing's for certain: No Java/J2EE. I just watched an interesting and relatively comprehensive presentation from someone at NASA's JPL that solidified that view. (HavingBeing forced to write to write Java/JSP for class also helped with that particular decision.) There is also the comparative "Snakes and Rubies" presentation, given at a university in or around Chicago by the creators of Django and Ruby on Rails. Yeah, I wasted about 3-4 hours of my life on them, but it was relatively informative, and I multitasked during both, so it wasn't a total waste.