Here's a video i dug up from vanilla WoW. C'thun pre-nerf. At the time this was the epitome of raiding, and the guild i was in before edge (Order of the Raven on aggramar) was the only guild on that realm to beat this fight.
Now before Sunwell, this guild used only raid chat to do any communication in raids, and we were proud of that. This was our 2nd kill. Sorry about the bad quality, I re-incoded it a couple times since i don't have the original recordings. Also watch for things like Feign Death+ Jumper Cable on dead bodies, or FD + drinking. And yes this fight was long enough to warrent a 2 part video. Enjoy