The Supreme Court ruled much of the Defense of Marriage Act (DOMA) unconstitutional, and also ruled that the bigoted ratf%$#s challenging a lower court had no standing to sue in support of the anti-gay Proposition 8 after the state of California threw in the towel.

Both of these rulings are less broad than I would like, there was no ruling on the constitutional right to gay marriage per se, just that the Federal government could not choose which marriages to determine which marriages are real, that this was up to the states, and the ruling on the H8 amendment (Proposition 8) was limited to the issue of standing.

I expect to see a Loving v. Virginia type ruling in the next decade, either legalizing gay marriage, or requiring all states to recognize gay marriages from other states.