I love contextual menus. In Mac OS X, you find them when you right-click, two-finger-click (on a trackpad) or when you hold down the Control key and click. They're handy in scores of applications and in the Finder; if you're looking to supercharge your iTunes usage in particular, Macworld's Kirk McElhearn has published 10 ways to use contextual menus with iTunes.
One particularly useful option is to "Start Genius" from any track. When selected, iTunes will instantly create a genius playlist from that track. The "Add to playlist" option is also useful. When selected, you get a hiera
