You could also file this under "fantastic
Automator actions that Apple should've advertised when Tiger was being released."
A post at macosxhints has discovered a simple Automator action you can use to open panel containing your entire iPhoto or iTunes library (pictured), complete with albums/playlists, DnD and even search abilities. This is for all those times you groan at having to start iPhoto just to grab an image or two. Bonus points for the iTunes library action: songs are playable from this panel.
Check out the macosxhints post for the drop-dead simple 3-step process (it's really only two steps) for creating this handy panel.