Favorite Themes:
Expert Builder - only 8 sets before name changed to Technic - Complete! (Three are unopened!)
Technic - the majority of my collection... Complete except for some of the Universal Sets
Model Club - Only 8 sets from the mid 70's. Complete! These were only sold in Europe...
Model Team - Complete! (most NRFB)
Original Pirates - 1 to go (all but one unopened) - 4 are European versions with shooting cannons!
Original Space - All the 4xx/9xx sets, including a mint #918 available only in Europe.
Trains - Many 12v sets from the 80's, and even some uber-rare 4.5v sets including a MISB #138.
Micro-Vehicles - I just started coming across these sets and with various purchases from Europe and Australia, I now have about 60 of them plus another 15 already slated for the fall auction.
Statistics:
Total sets in collection: approximately 800
Pieces:
Total elements (pieces) in collection: approximately 190,000
Largest set: 5,195 elements
Smallest set: 1 element