The three finder views can now be toggled with command-1 (list), command-2 (icons), and command-3 (columns). Finally!
[Editor's note: Not quite a hint, given that these are clearly listed as shortcuts in the View menu, but many people (me included!) may not have noticed them...]
Mac OS X Hints
http://hints.macworld.com/article.php?story=20020828084524795