When I interviewed at Dartmouth last year, they specifically told us that although they are rolling admissions, that they are very very careful regarding their selection of the first group of acceptees. They said that often they dont decide on who to admit first until late Nov/early December, even for the August/Sept interviewees.
I cant remember when my application was complete there, but I think it was done by early August, offered an interview in mid October, and got accepted the first week of December.
I also got that DVD ("The DMS Experience") mentioned above, i thought it was a nice touch and had a very professional look about it.