As a keyboard junkie, I'm always looking for new ways to perform mouse-like operations using the keyboard. Today, I discovered that in Firefox, Control-Space simulates a right mouse click wherever the current focus is. This doesn't seem to work in Safari.
[robg adds: It won't work in Camino, either, but it definitely works in Firefox 1.5. Nice trick.]
Mac OS X Hints
http://hints.macworld.com/article.php?story=2006092910283420