I just wanted to post to let all you folks who spent alot of hours trying to figure this out, so sorry for the Necro post:
In the end, i figured out the answer to #1 (0.025 BTC). After trying many difficult and overly complicated answers, and based on all of the other answers it seemed like it should be more straight forward, i thought back to the change from 5 to 2 in the 2nd video that was posted on here, so i tried some things, then i noticed 2 things:
5-2 = 3
and 5784623964023, if you think of it of 5 to 2, then its either 578462 or 578462396402. 578462396402 (also, removing the 3) would mean a typo, which have been made clear that a few were made in the Brainwallets. So, in the end, the brain wallet was:
5784623964023 578462396402
I was shocked when i got it!
Who knows what the other unsolved ones are, but that is irrelevant now. I suppose there is 0.01 in #30, which i think most people said is Satoshis white paper, although there is no real clues as to what it might be aside from that.
Also, i noticed the contest website now goes to a 502.