The McCain-Palin campaign released an ad today firing back at Obama for his "lipstick on a pig" remark. Click here for the ad.
Update: Sorry, but the ad is no longer viewable at the YouTube link noted above. Ben Smith of Politico reports that "YouTube has removed a webad that casts Sarah Palin as the victim of sexism on the request of CBS, whose anchor Katie Couric was featured in the ad." Smith adds:
YouTube's page displaying the ad now tells visitors, "This video is no longer available due to a copyright claim by CBS Interactive Inc."
Couric's original commentary can be seen here. A cached version of the McCain ad is currently available here.