Major pair of decisions in Massachusetts by Judge Joseph L. Tauro (appointed by Nixon, no less): Section 3 of the Defense of Marriage Act is unconstitutional because it denies gay couples equal protection of the laws without a rational basis.
Full text of the decisions: Gill, Commonwealth.
See Adam B's post at Daily Kos for the cliff notes.
Wow, that opinion is a tour de force. The government just got pwned.