Snapping in Final Cut Pro!
A very important feature when you are editing in Final Cut Pro is snapping. I constantly turn it on and off depending on if I want to align clips without having to zoom in frame by frame or if I just want to move a clip accurately. You can easily try with both snapping on and off by hitting "n" and then moving a clip in the timeline. Something that I have just discovered today is that you can actually temporarily enable or disable snapping for only the current operation. What happens is that if you are moving a clip and find out that you don't want snapping (or the other way around), instead of releasing the mouse, hitting "n", moving the clip, and hitting "n" again to reenable snapping, you can just hit "n" while holding the clip. It will temporarily disable snapping, but as soon as you release the clip, snapping will be turned back on automatically.