Well Mathew J,
I am big time into watches as well. Although I prefer sport watches: Omega and Tag Heuer.
Cars = SVT Contours and SVT Cobras.
Home Theaters = I just finished building a theater in my basement.
1/18th scale Die-Cast car models = I'm running out of room to display them.
As with all hobbies, the more you get into it the more expensive it gets!