Check out these useful links for help planning fabulous, fun, and free (or at least cheap!) activities for date night or an outing with the kids.
http://discoverlosangeles.com/play/activities-and-recreation/activities/100-free-things-to-do.html
http://savvycities.com/los-angeles/cheap-dates-la/
http://365cheapdates.blogspot.com/2010/06/365-cheap-dates-los-angeles-orange.html
http://freethingstodoinlosangeles.com/Free%20Things%20For%20Kids%20To%20Do%20In%20Los_Angeles.html
http://attractions.uptake.com/california/los_angeles/cheap_vacations/269173261.html