Cereal has always been a weakness for me, too. Sweet and tasty, always calling for seconds, never filling for more than an hour. Come to think of it, cereal is the reason WW didn't work out for me this time last year. It gobbled up too many points and left me hungry.
Maybe it's totally un-IE, but I don't keep it in the house anymore. Two reasons: 1) I remember totally losing control with it before and thus fear losing control again, and 2) I remember how crappy I always felt after eating it... the sickly "oversugared" feeling, the overfull tummy, the guilt. Plus, my body never seems to "call" for it when I'm in the grocery store... so I guess I do have one IE reason to shun it.
I dunno. Maybe there is a better solution. Part of the trigger for me is that there is always a BIG BOX of it. Perhaps if I just bought the one-portion kiddie packs the psychological pull to go for seconds wouldn't be as strong.