What's your favourite feminist kick-arse song?

[SolidGoldVampireBat]

Post it up here. Rows and criticism of each other's choices welcome too.
Here's one of mine to start you off.

I love 'Unveiled' by Otep, anything she does I would class as 'kick-ass'. Filthee is also good

I love 'Cant Hold Us Down' by Christine Aguillera

(Not essential but it makes more sense if you know that's she's riffing off.)

Oh and