1. Have a minimum of 10-foot high walls-- 12 foot would be better.
2. Even if a lift is not in the current budget, consider space for it in the future.
3. Use room trusses rather than scissor trusses to create extra attic storage space.
4. If the garage is detached, run a few extra 3-inch underground conduits to it. Let them stub out though the slab, bury them in the wall and forget them-- at least until you need them.
5. Insulate the entire shop-- walls and ceiling-- and get good insulated garage doors. If you are in an especially cold climate, consider 2x6 studs on 24-inch centers rather than 2x4s on 16 to allow a deeper insulation cavity. If the garage is well insulated, keeping it at 50 degrees during unoccupied times in the winter will barely nudge your fuel bill.
6. Instead of wood baseboard, consider something tough like Hardie Board and run it at least a foot up the wall.
7. Wire the garage with plenty of 20-amp (rather than 15 amp) heavy duty receptacles. Install three 220 volt circuits-- one 30 amp for a compressor, and two 50 amps-- one in the front of the garage and one in the back-- for welders. Consider more 220s if you ae going to be running heavy machinery such as lathes, mills, etc. For really heavy duty applications, run 3-phase if available.
9. Install a few ceiling receptacles for things like ceiling mounted drop lights, etc.
8. Make provision for a small sink to wash your hands. If you have room, a commode is a luxury addition. This assumes that you will have water in the garage which is extremely handy.
9. In-wall fire extinguisher cabinets are cheap and a nice safety feature.
10. If you install a center floor drain, make sure your concrete man makes the floor slope toward it! (Learned this the hard way, and grinding cured concrete is a bear and a mess.)
11. Install celestory-type windows, especially on the north side of the garage if possible and if security allows them. Coupled with good ceiling light, a bright, well-lighted garage is not only safer, but much more pleasant and productive to work in.
12. Add blocking to the walls for future additions such as cabinets before the walls are covered.
13. If you are staying with a bare concrete floor, mark the center of each stud location on the floor with a permanent marker. Allow your stud marks to extend a half-inch past the finished wall. Knowing where the studs are will eventually come in very handy. Trust me.
14. When you pour the footer, include a brick ledge even if you don't intend to brick the building at the current time.
15. Be sure to adequately vent the attic space with a soffitt-ridge or power venting system.
16. In the slab, install a small drain line to the exterior of the building for draining your compressor.
17. Take special care to be certain that rain and water does not drain toward the garage doors. Work real closely with your concrete contractor on this, emphasizing proper drainage.
18. If you are considering painting in the garage without a booth, at least weigh the pros and cons of building a partition wall to separate the dirty mechanical area of the garage from the paint area.
There are a few things off the top of my head.
So do a lot of planning before hand. Cram everything into it that you can get on paper, then you can start taking away 
Good Luck