The most beautiful evidence of the Sun-Earth Connection are the auroras--the northern and southern lights...

http://www.exploratorium.edu/learning_studio/auroras/
The Exploratorium's "Auroras: Paintings in the Sky."

http://science.nasa.gov/uvi/LatestImage.htm
The Aurora Today from the Polar Spacecraft.

http://eiger.physics.uiowa.edu/~vis/images/
Latest visible image of the aurora.

http://www.windows.ucar.edu/spaceweather/storm_displays.html
Real time data on auroras.