I found a secret room while playing Max Payne 2. It plays a kind of music sound wave when you enter and it saves there. I dunno if anyone has posted this before so I took a few screens (can someone please tell me how to record demos). Here they are. Its kinda sad I feel bad for the kid.
Part One: The Darkness Inside
Chapter Seven: The Million Dollar Question
When you get to the part with the window cleaners lift you go all the way to the bottom part of the scaffolding. To the right there should be an open window with a guy in it. Kill him but don't go into the window. There will be small ledge right next to the window you can walk on. There will be a bar from the scaffolding thats slanted kinda blocking the ledge but just jump over it. Go around the corner and there will be an open window with that in there.
I remember stumbling upon this when playing MP2. I think I read at the 3drealms max payne forums it was a 'real' memorial thingy, ie. not some sort of weird joke.