I liked the most recent Mastodon video (the one in the space) I thought it was kinda freak but cool.

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Also...
+1 to the idea of Dirge for November, it has already been completly discussed in the past but the whole video clip that it could be is still fresh in my memory.
Some other titles I'd choose.
Credence : Scenes with funerals, departure, the picture from the album, of course, etc.
Dirge for November : Black and white video clip, with a guy staring at a window, very nostalgic somehow, and then slowly preparing to commit suicide. And I have a very precise picture for the ending. There's a drapery on the window that slowly moves (because of the wind, since it's open), and there's a slow fading out and camera going back, and we can see the guy tied up in the room, or something such. I don't know how he kills himself ironically.
Deliverance : A lot of flashy scenes, with love and murder, a man that drowns his beloved, lots of scenes from memories, and then the guy that regrets, the "Deliverance" laughing at him and some dramatic ending.
Hope Leaves : Well of course many scenes from a lost love. Very pale video.
Weakness : Similar to the previous one but darker, with scenes that don't move. Everything stand still. And maybe a murder or something such.
Harlequin Forest : A guy that runs through a forest, trying to escape the hounds, with many scenes of the past, of what he has done to her mother, the summoning, and all the regrets that pushes him down. And also some light that reaches through the trees. (...) And finally the burning woods.
As for
Watershed, well I would have done something more explicit and also different from Porcelain Heart, but with the same ambiance. More scenes in Burden but the rest is okay. Maybe a clip for The Lotus Eater, but I don't know what to think really.