Seen movies:

GF seen to much (around the 20 times Trilogy)
Casino (2 times)
A Bronx Tale (2 times)
Once upon a time in America (2 times)
And other mob movies probably once

Transcripts:

Well not many...I only know quotes/oneliners from GF trilogy

Mob books:

Around the 40. They are all real, none of the is fiction. (And I got ofcourse the GF book/Legacy)

Posters:

GF 3 got from the Cinema. With glass and frame.

Rare items:

Maybe the GF Epic (in the Netherlands it's hard to get) and some GF art pieces.

Memorabilia stuff:

Probably my paintings of GF trilogy. And I'm happy with the epic.

Other things:

I read a lot about every Mafia/MOB thing in the world.