Baroque music, live concerts, dance music.

Cockpit view of the Brtish Airways Concorde on a nonstop flight from New York to London and back, including preflight check.

German History. WW2 and the micro events of the Third Reich. Witness accounts and research into forgotten victims of this atrocity.
Technical Journals.
Rebuild manuals for old engines.

Beards!
Building and playing harpsichords and visiting and playing antiques instruments.
Working on house, working on old cars.
Biodiesel, solarpanels and their controls.
Photography.
Old Stereos, Turntables, amplifiers including their bulding and restauration.

Recovering from back surgery last year and still having a hard time sitting. Next time I play the harpsichord I will have a hard time playing without entangling my hands in my beard.