Supreme Court decision that calls marriage a fundamental right:
In Zablocki v Redhail (1978), the Court struck down a Wisconsin law that required persons under obligations to pay support for the children of previous relationships to obtain permission of a court to marry. The statute required such individuals to prove that they were in compliance with support orders and that marriage would not threaten the financial security of their previous offspring. The Court reasoned that marriage was "a fundamental right" triggering "rigorous scutiny" of Wisconsin's justifications under the Equal Protection Clause.
also:
This is the funniest anti-8 ad I've seen. Hooray for sarcasm.
YouTube - Vote NO on Prop 8