Totally missed this thread the first time around.
Saw it on BD last month and loved it.
I'm seriously hoping McCarthy gets an Oscar nod (she won't).
If anyone watched the deleted scenes you'll notice they filmed several versions of the scene where McCarthy gives Wiig a pep talk. Only the original scene was with Jill Clayburgh giving the talk (it happens at the gas station just before Wiig sets up Clayburgh with the guy who works there).
It's a testament to McCarthy's performance that her version of the scene is what made it into the final film.
Favorite scene: Wiig and Rose Byrne trying to out-do each other with their speeches at the rehearsal.
Also, John Hamm stole all his scenes. He was perfect. I'm laughing right now thinking about him kicking Wiig out post coitus.
....but the world goes 'round