i came up with a fun idea to help my almost 4 year old son brush his teeth. he has a toothbrush with a little car on the end of it. i started pretending that the car was in a race and that brushing his teeth was part of the track.
when the car pit-stops, he spits. (ha, that's an unintentional play on letters ;)
of course we always win the race ;) and brushing teeth has become a lot less of a hassle!