Earlier quoted context omitted.
Since his whole plan is predicated on giving the income to his kids, he could just gift them the $1,000 as soon as its made and it never gets hit with estate takes. He can now do 12 of these gigs a year ($12,000 a year is the max you can gift without declaring it) and pass it entirely onto his kids.
You have to pay estate tax on gifts too. Otherwise rich people could avoid estate tax by giving their assets to their kids before they died.
A less comprehensible explanation is available from the IRS here: http://www.irs.gov/businesses/small/article/0,,id=108139,00....