[ErVikingo]

The list for mine (soon to start hopefully) includes:

- plenty of outlets
- 110 and 220
- air lines
- closet for compressor
- exhaust vent
- provisions for a lift (slab, power and height)
- drainage (in case you want to wash car inside)
- some light fixtures on the walls
- provisions for parts washer
- HVAC, intercom, telephone, internet and tv
- Alarm and cctv
- full bath and closet
- Rolling work table (thinking of making it using rolling tool chests and butcher's block)
- mezzanine area for storage of spares (you will have take offs...)
- storm windows (did I mention I'm in SoFla?)
- Insulated garage door
- polished + sealed cement floor; I have not seen an epoxy product that does not peel yet
- retractable extension cords and work lights

I have more ideas listed at my office.