Much, much more than I imagine you want to read on the topic at Gaga Studies:
http://gagastudies.blogspot.com/
I think this piece (on Gaga, anorexia, and ingestion) is a particularly good defense of Gaga's interestingness:
http://populardemand.wordpress.com/2010/04/25/taking-it-all-in/
On Gaga's indebtedness to Madonna, there's what's shaping up to be an interesting series of posts on Madonna, Beyoncé and Gaga in relation to afrofuturism here:
http://its-her-factory.blogspot.com/2010/09/announcing-series-of-posts-on.html
--
"I had never understood why Socialism need imply the arraying
of oneself in a green curtain or a terra-cotta rug, or the
cultivation of flowing locks, blue shirts, and a peculiar cut
of clothes." -- Isabel Meredith, _A Girl Among the Anarchists_ Voyou Desoeuvre <http://blog.voyou.org/>