No this is not one of those late night infomercial scams!
If you are a law enforcement officer, firefighter, EMT, or teacher listen up! You can get a guaranteed 50% off a home if you live in it as a primary residence for 36 months! Guaranteed by the US government! 50 freaking percent! You can’t own any other property, though, so we are unable to do it.
The ONLY drawbacks I see are limited selection of homes and being locked in living there for 36 months. For the right person, this is the chance to get a HUGE discount on a home though.
Go here for more details: http://portal.hud.gov/hudportal/HUD?src=/program_offices/housing/sfh/reo/goodn/gnndabot