Tony Kushner's Angels in America has an intimidating reputation: It's a work in two parts - Millennium Approaches and Perestroika - that earned its playwright a Pulitzer Prize; it boldly explores religion, politics, and homosexuality in Reagan's America; and its two leading figures are men recently diagnosed with AIDS. So where, in regard to The Green Room's current presentation of Millennium Approaches, do I begin in describing just how much freaking fun this show is?