Stuff around the house: Mostly do it myself or with the help of my father-in-law. If it's a big job (mainly electrical) (ex. Had to have my circuit breaker panel and service replaced earlier this year), I'll outsource it. Fixing roof, installing/fixing appliances, yardwork (tough to find time to do much other than mow/weed, though), snowblow, plumbing, etc, all falls to me. I'm too cheap to hire someone else to do it.
As for my car, I tend to let a mechanic mess with those things. I know next to nothing about cars.