This is an old video from early 2010, Wrath of the Lich King on Ravenholdt Eu. Filmed by Nanosh it is still considered the best video of the time, due to the amount of rounds and kills achieved against our rival Guild, Dark Saints. The video is split into two fragments.
Part1 shows rounds 1-3
Part2 shows the end of round 3-5
WCM version only shows part1
There was massive amounts of killing and our guild at the time, The Holy Half Deads was beating the crap out of Dark Saints. Our first full 40man raid (with only guild members) since 2007 TBC. So it was certainly a thing at the time.