I suppose this is as good as place as any to list off some of the more “unique” strategies.
Pet Pulling and Kiting General Drak in UBRS
The first “raid” in Vanilla WoW was the 15-man UBRS (may have been changed to 10-man during late Vanilla), and a common strategy would be to have a hunter pull the boss with Eyes of the Beast to manually guide his pet, pull Drak ALL the way into “The Beast’s” room, and kit Drak around the perimeter until the hunter died for one reason or another (or a smart Feign Death before actually biting it). Hopefully, by the time the Hunter was down (or faking it), the adds beside Drak would be down and the rest of the raid could go to town on the boss proper.
Terrain-Pathing Exploits or "Mobs don’t jump"
This is more of a “solo” strategy than a raid one, but could be handy in a pinch. Mobs can’t jump, so if you leap from one piece of geometry to another without causing an Evade-bug-out, the mob will run to the nearest “ramp” which would would allow them to reach you… jump back, and they go back the other way. Obviously only really works with melee mobs & bosses (quite a few of them), and depends on other factors like location. Allowed many a clever player to solo enemies they shouldn’t have. Works best with Hunters and Warlocks.
Come to think of it, this is a good place to show the videos:
The video below is from TBC (and the boss chained to prevent it from happening again), but a good example of how it works in concept:
Wiping with Style
Pretty much anyone can do this, but things are going south, make them REALLY go south. AoE fears are great for this.