I just looked into Eclipse 3.3 - New and Noteworthy. Lots of cool new things! My favourite is Quick Access. This essentially allows you to type commands instead searching the command in the menus. If you have customized your perspective, to get rid of annoying tool-bar buttons, you still have access to commands that are not visible in any menu or tool-bar!
I have bound Quick Access to ESC-X (like in emacs) and it feels a bit like the emacs minibuffer.... Very cool!
BTW: I wish eclipse would allow links into the "News and Noteworthy" pages (see bug 194993), that's why I created my own copy of "News and Noteworthy"...