Synopsis As Introduced Amends the Use Tax Act and the Retailers' Occupation Tax Act. Provides that no tax is imposed under the Acts upon the use or purchase of (i) tangible personal property that is purchased in its original package for a selling price of $600 or less or (ii) tangible personal property that qualifies as an "Energy Star" product under the federal Energy Star Program to the extent of the first $600 of value if that property is purchased during a tax holiday. Defines "tax-holiday" as the period from 12:01 a.m. on May 23, 2008 through midnight of May 26, 2008. Sets forth criteria for transactions to qualify for the exemption. Effective immediately.