From the ABCNews.com lead story:

Referring to the lipstick remark, Dowd said it was "an expression that was fine to use two weeks ago. ... My guess is whether they apologize or not, Barack Obama will never use that expression again in the next 60 days."

I TOTALLY disagree.  I think Obama should push this line again and again.  First, when used in all sorts of contexts, it vitiates the argument that it was a sexist term.  Second, it makes the McCain camp continually respond, which further bolsters Obama's point that they have no ideas, just rhetoric.  Finally, speaking as a member of the "Democrat" party, it will drive the opposition nuts!

Also, it's about time Obama did an ad that simply catalogs the lies tied to the theme of "They have nothing to offer."  Call them out:

"John McCain hasn't given Americans any ideas about how he plans to address the challenges we face.  Instead we get nothing but lies."  Then do a montage of the lies where there's a buzzer or stamp or something after each one.  Then close with, "America is tired of the old politics of lies and distortions.  Barack Obama has real solutions for our future, not more of the same."