Super Mario 64 level data at Acmlm's by MIO0 at 11:52 PM EDT on August 16, 2005
I thought that some of you may be interested in, and possibly have comments about, this thread at Acmlm's Board. The thread is about recent finds about Super Mario 64 data. The thread is nearly 500 posts long and discussion covers the contents of MIO0 files, information about the format of the level data, an editor for certian objects in a level, and some noobish questions. The information is incomplete, but intersting.
I noticed a link from that thread to somewhere on this site (I think it was to the IDA sigs), very cool work you/they're doing over there. I'd thought that SM64 would be ripe for hacking, given how fairly simply it is laid out.