Gurg, I agree that I'd like to see some too but I doubt you will see many. To make an over the top generalization, I think people who roll healers rarely are spot light seekers, and therefore are less likely to make a video.
That, and even if such a video did exist which showed perfectly how to heal at 2400+ rating, if it was posted at WCM the first 10 pages would be filled with "I hate the music", "You miss timed that one Mass Dispel" and "boring video from a horrible <Priest/Shaman/Paladin>". I'm just not sure how many people who have chosen a healing class want to bother. Druids on the other hand, seem to break that mold, probably because they are so actively doing other things (Feral Charges, opening with Pounce, kiting, etc.).
Like the poster above me, I'd love to be proven wrong and see a tonne of healer PvP videos released, so at least I'd have the option of watching them.