Lone Star Mega Millions winner faces a $545 million tax hit Texas ticket holder claims an $800 Million jackpot but Uncle Sam's cut slashes the prize the IRS is poised to pocket more than half the windfall the Winner's dilemma lump sum or 30-year payout State tax-free Bonanza Sparks debate on lottery taxation will this record-breaking wind fuel gambling addiction concerns Mega Millions Mania grips the nation as an ordinary Texan becomes an instant multi-millionaire