Eclipse has very nice Ant integration, letting you rrun a build file from the context menu all over the place, either via a dialog for selecting the specific target, or using the last/default target. What I didn't know until today, however, is that you can right click on a target in the Outline view and run that target directly, without having to go through the normal target selection dialog.
If you use Ant, definitely useful. If not, reenforcement that it's worth a bit of digging to learn about your tools, so you can leverage them most effectively.