While I was working on a Pokémon Silver Hack, I was looking through trainer data and found there is trainer data for Professor Oak. His trainer class is Pokémon Prof. And his name is Samuel rather than Oak. I think he has a Mankey at level 5 and possibly an Oddish. For some reason I can't find the data any more . Theres also data for Cal but his Pokémon are devolved according to level indicating you were able to challenge him earlier in the game. There's also unused maps, like a Safari Zone map. Also there's unused music. One is called "??($5A)". I'm not sure how to attach the file though :/ . Feel free to post your own discoveries.
That's certainly interesting. I'm really intrigued. I might, if I'm bored and feeling confident, try and dig up some unused info or data that Silver may behold one day. As of now, I'll just be listening to you guys.