The instruction PDF is up on the Mini Builds
page and, as always, archived for posterity in the public LEGO folder of my Dropbox linked in my signature below (browse to "Instructions_official" -> "MMMB" to grab it).
Interestingly, I noticed that the instruction sheet for the Batman & Robin "Pickable model" is also available on the Mini Builds page, below the archive of MMMBs. I've also added the B&R instructions in a new folder (browse "Instructions_official" -> "Pickable") and placed it therein. Does anyone have the PDF for the others?