Spencer's new favorite thing to do is pull out a TON of books from the bookshelf to read at night, and at naptime (instead of going to sleep). His "punishment" is putting them all away, he HATES it -- usually has to spend some time alone in his room before he does it. But, that doesn't stop him from doing it the next nap or bedtime, even when I remind him how much he hates it.
Seriously, when is it that we learn that every action has consequences -- even if they're mommy-imposed. :)