aww, Judy. prefer Halberstam to Butler, but both are pretty brilliant in their own way.

have you poked at Julia Serano or Kate Bornstein yet?

if not your license, then at least your toaster oven. Butler is good, but her and Eve Kosofsky Sedgwick (Epistomology of the Closet) are both more queer feminists, than queer theorists, if that makes sense. they both do a lot of work to problematise socially constructed ideas of gender, but tend to stay within the binary. i like the stuff that blows the binary all to hell, and dumps everything on its head.

for Judith Halberstam, "Female Masculinity" was brilliant; haven't read any of her other books, but they come highly recommended.

for Kate Bornstein, "Gender Outlaw: On Men, Women, and the Rest of Us," and "My Gender Workbook: How to Become a Real Man, a Real Woman, the Real You, or Something Else Entirely" were both great.

Julia Serano's "Whipping Girl: A Transsexual Woman on Sexism and the Scapegoating of Femininity" is also a must-read.

and if you can get your hands on "Trans/forming Feminisms" ed. Krista Scott-Dixon, that's a great one too. anthology of essays, some quite academic and some more personal/subjective. super readable.