There are several interesting videos in the Wrath of the Lich King section. Split up into several categories. The newest instances first.
Ulduar
Yogg Saron, 10, Alone in the Darkness
This was our first Yogg Saron 10 man kill with 0 Keepers, Alone in the Darkness. Too bad that I lost sanity in the end, but I thought we could burst down the last % before my sanity ran out ;-)
Thorim, 25
This video features the hard mode fight versus Thorim in heroic version of Ulduar from an enhancement shaman’s PoV.
Kologarn, 25
This video features the hard mode fight versus Kologarn in heroic version of Ulduar from an enhancement shaman’s PoV.
Flameleviathan, 25
First Boss in Ulduar(25) killed on Leviathan hard mode.

Naxxramas
This is a Patchwerk (heroic) kill from March 09, not the fastest, but nevertheless quite ok. Enhancement Shaman PoV.
The kill took 2:10 minutes and had 97064 Raid DPS.
Outdoor
Taming Garwal
With perfect timing it was possible to tame a wolf (Garwal) turning into a worgen in Howling Fjord. This video shows how it was done.
Garwal bugged
Since the worgen was classified as humanoid they removed the ability to tame the pet and removed all his talents. However as side effect Garwal’s size bugged, as you can see in the following video, and the pet was 4 times the size of his master.