The Backyard Drive-in is a large portable projector screen that quickly and easily can be constructed and taken down. Use it for movies, games etc.
There are two sizes to choose from: 10(W) x 6(H) feet and 13(W) x 9(H) feet. More information about the Backyard Drive-in at thebackyarddrivein.com.
No word on pricing.
(Via Home Improvement Ideas)