Israeli and Australian researchers discovered that 1 mg of [sildenafil (Viagra)] dissolved in a vase of water can extend the shelf life of cut flowers, making them stand up straight for up to a week beyond their natural life span. The drug also slows down plant ripening; tests were done strawberries, legumes, roses, carnations, broccoli, and other perishables. Viagra increases the vase life of the flowers by slowing the breakdown of cGMP by cGMP-specific phosphodiesterase type 5. The Viagra acts on the cGMP in a fashion similar to nitric oxide (which also slows down the ripening process), but was found to be easier to use with cut flowers.
The 2007 Ig Nobel Prize in Aviation went to Patricia V Agostino, Santiago A Plano, and Diego A Golombek of Universidad Nacional de Quilmes, Argentina for their discovery that Viagra helps treat jet lag recovery in hamsters.
From Wikipedia