Sparkpeople is a good place to go. Lots of people imputting different activities/foods.
You could look into getting a Heart Rate Monitor for seeing what your calorie burn is more accurately during workout periods. Sometimes we over-estimate our burn when we consider our daily caloric count. Polar is the top-notch brand for those.
I personally have a Bodybugg, which seems expensive and kind of a pain you have to subscribe yearly (about retail $80 a year)- but you can often use coupon codes and utilize promos to bring those costs down. The bugg is a device you wear on your arm and it tracks your burn for the day and even shows you where you burn the most in your day.
So if you're looking for accurate burn counts, you'll find wearing a personal device would be best. Ask around first- someone might have an old heart rate monitor they no longer use that you can get your hands on. If you're looking for something in general corresponding with just your height/weight/gender/etc, I'd check out Sparkpeople.
I also do use the Weight Watchers eTools since I am a WW member- it is just harder now with the plan change from last year to calculate PointsPlus activity totals than when it was just the points system. That's why I wear a device so I know how accurate my intensity levels are.