US Residents (50 States and D.C.) aged 13 years or older only.
Enter Esquire Magazine's DARE TO DREAM SWEEPSTAKES.
Enter the sweepstakes online. No purchase neccessary.(Make sure you click the NO PURCHASE NECCESSARY link)
The sweepstakes runs from December 15, 2007 at 12:01 AM Eastern Time through January 15, 2009 at 11:59 PM Eastern Time.
The grand prize winner will win $250,000.

You can enter without a purchase or trial offer. There is, however, the opportunity to get a free trial issue to Esquire (but I think it's a crap magazine). The better offer is after you enter. You have the opportunity to receive a 12 month Popular Mechanics subscription for $5, 12 months of SmartMoney for $5, or both for $10. I'm not sure about SmartMoney, but Popular Mechanics is a good mag.

Sweepstakes Rules