I understand that flossing is actually more important than brushing. The reason is that while brushing cleans food and sugar from off the surfaces of your teeth, flossing actually removes it from the tiny spaces between, which is where cavities start (and get worse).
If you think about it, your saliva can pretty much keep the surfaces of your teeth clean, and then flossing takes care of the in-between.
The first time I actually started flossing was after I quit smoking. Let me tell you, the experience of smelling the bacterial stench from a little chunk of "stuff" that came from between my teeth was more than enough to make flossing a daily habit for me. Because I quit smoking, I could really smell it...it smelled like bad breath concentrated 10 times.
The best way is to get the little plastic flossers. They make it so easy. You just grab one in the morning and then floss on your way to wherever. It's only like 5 bucks for 100.
But you have to make sure to get the nice ones. I think they are called "Silk." Don't get the cheap ones, they don't work as well and the thread breaks.