One time per person/email. http://www.sonypictures.com/homevideo/ghostbusters/sweepstakes/registration/

Sweepstakes Prizes:

Grand Prize: 3-night trip for two to the The Embassy Suites San Diego Bay-Downtown in San Diego, CA, admission for two days to Comic-Con 2010, $50 Gift Certificate for the House of Blues San Diego, and $100 awarded in the form of a check. (ARV $2,157)
1st Prizes (5): Ghostbusters T-shirt. (ARV: $20)
2nd Prizes (5): Ghostbusters hat. (ARV: $20)
3rd Prizes (5): Ghostbusters graphic novel. (ARV: $18)