Oh god, these threads make me laugh.
#1) Live small. You probably don't need a house as big as you think.
#2) Live closer to work and amenities, try to ride a bike to places as much as possible. I don't care if you are an adult and think it is childish. Don't make excuses, you wussy man.
#3) Food. Buy in bulk, don't eat out as much.
#4) Cell phones. Get off the major carriers, buy your phones outright, get on an MVNO, sell the phone when you are done with it and use that cash to buy a new one.
http://en.wikipedia.org/wiki/List_of_United_States_mobile_virtual_network_operators
#5) Ditch a car and make it work. You are a problem solver, right?
#6) Get your kids applying to scholarships, or raise exceptional kids so the school is offering scholarships. Also, have them take some college courses at the local community college before leaving for college or for the first year. Intro college courses at the big universities are a ripoff.
#7) Dump your cable payment, if you have not already.
#8) Get last year's model of running shoes.
#9) Buy all your clothes on discount.
#10) Your kids will not hate you if you cannot provide every darn thing that they want.
I could keep going, but that should be a good starter for you.