Brazilian priest Rev. Adelir Antonio de Carli embarked Sunday on a 465 mile journey across Brazil using thousands of helium party balloons to lift and transport him. Unfortunately, he was blown off course and his ground crew has lost track of him, not knowing whether he has landed safely somewhere or unsafely or if his journey through the sky continues. The video above from Brazil's Globo TV G1 television station shows the priest preparing for his flight, taking off and disappearing into an overcast sky. There are more videos (all in Portuguese) about the flight - and the subsequent search & rescue operation that is taking place now.
Update: Basically the same video [YouTube], but from the Associated Press with a voiceover in English.