I'm a recent OS X-to-Ubuntu convert, but one feature I sorely miss is the quicksilver/applescript combo. Briefly: I would use applescript to write very simple, functional scripts (e.g. "resize the current window to take up exactly the left half of the screen", or "add the current date to the clipboard in a particular format") quicksilver to assign them to a hotkey (e.g. Ctrl-Alt-j for the first one).
I'd like to recreate this in ubuntu; where do I start?