I am attempting to follow their point system and see if it works. Any suggestions about particularly good snack foods? How many points are microwave popcorn? I tried the low fat version but didn’t like the aftertaste.
Try their forums (such as they are : http://www.weightwatchers.com/community/mbd/index.aspx . “Food Finds & Gadget Reviews” is a good place to look.
I’ve been enjoying :
WW 1-point yogurts
PB2 - amazing powdered REAL peanut butter, just add water, people on the WW forums can’t shut up about it, with good reason.
Popchips - popped potato chips - not baked or fried, not popCORN, but “popped” potato chips. Awesome, and low points.
WW Peanut butter Bliss 1-point bars - maybe only available at the meetings.
Skinny Cow 1-point Ice Cream fudge bars.
Newtons Fruit Crisp bars (Berry, especially)
Also, a general word of advice / encouragement : You can do it, if you REEEEEALLY want to. I (and my wife) finally wanted to, and it’s worked so far (8 weeks).
Joe
Curves granola bars (chocolate peanut or strawberries and cream) are only 1 point per bar.
Fiber One bars are 2 points, except for the peanut butter, which are 3. They’re all great, except the caramel, which suck rocks.
And most 100-calorie packs are 2 points (you could actually make your own using a full size bag and sandwich bags for less money though). Except the Hostess 100 calorie 3-packs of the mini cakes, which are 1 point per pack–the chocolate are iffy, but the Cinnamon Streusel Coffee Cakes are better than the full size ones.
Clementines are 1 point for two. Carrots you can eat up to 6 ounces for 0 points (that’s when I stopped calculating, because I’m not likely to want more than 6 ounces of carrots in a day). Peaches are 1 point. Bananas are 2 points.
Oh, and sugar-free fat-free Jello gelatin snack packs are 0 points per servings; sugar-free fat-free Jello pudding and Hunts pudding snack packs are 1 point per serving. If you’re feeling ambitious, you can make the Cook n’ Serve sugar-free Jello pudding with skim milk for 1 point per half cup (3 points if you eat a whole cup) and make your own snack packs with the mini Glad or Ziploc containers (not instant though, the instant is awful; the Cook n’ Serve is heavenly).
The two previous posters have mentioned most of my favorites already, but string cheese is yummy, portable, and only 2 points.
One thing that saved me when I was on WW (and I need to get back on the wagon, pronto) was a scoop of raspberry sherbet with a squirt of Hershey’s syrup and a handful of fresh raspberries on top. Great for summer, no fat, and you feel like you really had dessert without it being too terrible. I think it’s maybe 3 or 4 points.
I used to bring baby carrots and fat-free Italian dressing to dip and snack on at my desk. That’s another one that fills you up and keeps you busy with all the crunching. Good for when you’re watching TV, if you’re a TV snacker.
I haven’t tried PB2, but I might have to. Peanut butter spread on celery sticks is awesome.
A half a cup of Breyer’s Waffle Cone Overload is 3 points. Very rich and super yummy. S’mores made with reduced fat graham crackers are 4 points for 2 (1 Tbl. of chocolate chips & 2 Tbl marshmallow creme or 1/4 cup mini marshmallows).
Try an air popper for popcorn. Its been a long time since WW for me (and I didn’t do points, I did core - tracking points is too much work for me), but I recall Kudos Bars and Cherry Garcia Frozen Yogurt being fairly reasonable snack choices - as well as most fresh fruit and vegetables. I also recall No Pudge brownie mix being really popular - you mixed it with low fat yogurt in a coffee cup and microwaved it for a chocolate hit for very few points.
I think that its good to know what you crave, and then - when dieting - find a low calorie way to feed that crave in moderation - if you like salt - popcorn is better than potato chips. If you like sweet, a tablespoon of Hershey’s syrup with half a banana. If you just crave having something in your mouth - drink icewater or chew gum.
My girlfriend is doing WW via proxy with people she works with, and it’s working too which is great for her, but a box of these showed up in the house a few weeks back. I was home alone and wanting a snack so I found these and had two of them. Since that day, these are now known in our househould as “Fart Bars” because these are pure wind fuel. Tasty, but windy. 
It’s probably the 9 grams of fiber in each bar. 
But they are totally yummy. I need to stock up and get back to eating those for breakfast.
I had an oats & chocolate Fiber One bar a couple hours ago. Love those things; been eating them for a year or two now.
Yeah, they’re not kidding when they put “Fiber” in the title.
Not food, but: I eat when I’m bored, so keeping my hands busy helps me. Having a giant sudoku book with me helps a lot. Those puzzles are addicting.
I keep thinking of other good snacks! Reduced-fat Triscuits spread with hummus are really good. There’s fiber and protein and a bit of the good fat from olive oil, and Triscuits are crunchy and hearty enough that I only need a few. I like roasted red pepper or garlic hummus, but I’m sure any kind will do fine. A little sprinkle of cayenne over the top might help too.