See slideshare,net.There are plenty of decks on there from the MBB firms. Be aware of what you compare though - marketing materials vs. client deliverables vs. internal training decks vs. someone's personal notes. I've seen plenty of unstructured, ragged decks from MBB, as well as Big4. It's only once the final materials go to the offshore graphics centres that they get polished up, put into standard formats, etc.