I've become a big fan of couch potato when I'm playing with free will on because whenever I don't need that sim, he'll just watch TV all day and be low maintenance. Double mood gain from sitting in a comfy chair is no joke either. Unless I'm playing a sim who plans on doing some active like the professional sports career or making money through martial arts, I'll pretty much take couch potato almost every single time.
I also take neat a lot since I'm pretty stubborn about having a clean house in my game and having the clean entire house option to put the sim on autopilot makes doing that easier. Who knows, that sim might catch something I missed and clean it up.