Some good tips here, thanks. Shameless plug to follow..

For me I've just started back up on the diet thing but I use a gadget called a fitbit to help me. I did this a couple years back and it worked really well. Basically the fitbit (an internet connected pedometer basically) logs all my steps and calories burned during the day and I log the food I eat and as long as I keep burning more then I eat weight loss! Have already lost about 2 1/2 lbs since I started back up on this a week ago.

Ok now the shameless plug.. I'm running a contest on youtube right now sponsored by fitbit if anyone wants to win one: http://www.youtube.com/watch?v=5cWEn0RF3-Q