http://www.newsarama.com/22076-dc-re...ver-theme.html
I don't know how to link to the individual covers, but if you scroll through, you'll see the one for WW #34 (I think it's good), the one for SM/WW (so sweet, even though I'm still not fond of the pairing), and the one for JLA (she looks great)! And Donna is in the TT one!
My favorite cover is actually the Batgirl one, which is so very cool.