Until then, for those who are unaware, cmd-E copies the selection to the find clipboard, so one can write the find string in the main text editor, select it, and press cmd-E (cmd-G can be used to find the string currently on the find clipboard).
Indeed, this is handsome!
An amazing thing I found out by accident is that cmd-E works across applications! So you can have some text lying around in Stickies, select it and press cmd-E, then go over to TextMate and press cmd-G. And still have the regular clipboard for cmd-V pasting in the same go!
It's really a shared clipboard! While I thought it was a nicety of each app...