Yes, I am a Legomaniac. I have somewhere just north of 10,000 pieces, including a 3-foot models of the Imperial Start Destroyer and Millennium Falcon.
I also have the Imperial Start Destroyer.
Legos are great education tools as shown by this Lego stop-animation video of Great Microbiologists.
But, one of the greatest use of Legos I have seen in a long time and a most fantastic example of Poe's Law is the The Brick Testament. A fantastic site of Bible stories using nothing but Bible verses for captions. The story of Er and Onan is high comedy.