My day job is IT Director which used to be what you think, budgets, managing user & system support, etc. But, we are moving 2 facilities into a new large campus and I'm in charge of AV for the project designing about 60 rooms from generic conference rooms to video conferencing setups with 25 people sitting around a U shaped table with built-in mics and hidden table connections for power, network & video inputs, to a green screen AV studio, sound booths for pod-casting, usability lab with AV feeds to a monitoring room, various training rooms and general TV/digital signage in lobbies and cafe areas. I'm learning about the screen size requirements for optimal viewing (which is different than home theater), the latest in projection technology, AV control systems and other cool stuff.
In addition to being a DJ, I also work with a local multisport production company putting on triathlons & sports expos.