@realjohnboy,
I don't think it's voyeurism at all - the fact is that he's proposing to lower his own taxes significantly, while raising them on some lower- and middle-income families, while he already pays next to nothing for doing no work whatsoever.
There's also going to be some discussion about the 'carried-interest' rule and how Mitt has utilized that to turn regular income into 'cap gains' income, to avoid paying the highest rate of taxes on quite a bit of money every year.
These things matter - it's going to be difficult for him to avoid the labels the DNC hangs on him, when it's revealed how little he pays, the lengths he goes to to pay so little, and his intentions to pay even less.
Cycloptichorn