Okay, just for reference, here's a list of the hazard setters and Rapid Spins, since a lot of people are going to be interested in that. Have fun! Let me know if I've forgotten anything.
Stealth Rock users:
Toxic Spikes users:
Rapid Spin users (and Natu):
Obviously, Gigalith is going to be huge, and Rampardos all of a sudden becomes the best anti-hazards pokemon since it pretty much beats all hazard setters through Sturdy and the use of Stone Edge / Superpower / Earthquake. Pretty much Metang is the only pokemon that can set up against it... huh.