I'll update also and say that I have realized that I don't know as much about the Saturn as I thought. I do know a good bit, but only pertaining to US releases. I have some experience with various cards for it too though and will always point potential importers toward the Action Replay 4M Plus over anything else.
I still have a good bit of knowledge about the Game Boy, but I have a lot to learn yet.
I'm still a hobby Mame builder, so I'm good with helping with that stuff. Currently waiting on funds so I can finish my 3rd one.
Still this: I'm also pretty knowledgeable when it come to Castlevania, its games, mythos and most variations/ releases.
And I'm fairly good with shmups for the 360.
I'm also good with the Metal Gear series, I've played everything and read up on a lot of things too. Same goes for the Assassin's Creed series, except I didn't finish the last 3 games (need to do that). And I'm pretty solid on the .hack series, everything from the games, books and anime.