Paragliding. It's pretty tactical, and there's a lot of information to assimilate about weather, clouds, thermals, etc. Snowboarding, cycling, hiking, guitar, p

Paragliding. It's pretty tactical, and there's a lot of information to assimilate about weather, clouds, thermals, etc. Snowboarding, cycling, hiking, guitar, piano/keyboards. Music composition is the closest thing to programming that I've found, in terms of intellectual absorption.