The Truth is creeping me out

I'm nearing the end of the Truth puzzles in Assassin's Creed II (18/20 at the moment) and its been amazing so far. I'm more interested in what happened to Subject 16 than what Ezio is upto. I was never much into Dan Brown books (I liked the movies but they never really struck a cord with me) but going through Altair's Codex Pages and Subject 16's cryptic messages give me a greater sense of mystery than those movies ever did.  This interactivity is exactly why video games are awesome.  Figuring out all the small touches like the hidden morse/digital codes and little subliminal messages give you a great sense of satisfaction.
 
Apart from the intriguing conspiracy theory, I love the audio and visual feedback you get during the truth puzzles. The first time I was solving a picture puzzle, I never noticed the eerie white noise in the background and as soon as the last piece clicked, the loud * clink* sound gave me a big enough jump scare that I dropped the controller (in my defense I partly blame the 2 AM timing and an imaginary force feedback). 
 
 I really admire Ubisoft's attention to detail here for what is essentially an option sidequest.  I think this is the best example of how to do collectibles in an open-world game. I just hope the ending to both these mysteries don't let me down in the end.