I have run almost all of the classic and BC raids, and a few of the WLK raids, although I would never claim to be expert on any higher end raids (but I run a mean SM Cath!). There is a chance that I could get my son (Dookiebutter, 80 Tauren shaman, GM of guild XXV-check him on Armory) to run us through some raids to get the feel for them.