Cassini has snapped shots of lightning on Saturn. First-ever images and a movie are being released today. (Image advisory can be found here.)
Apr 14, 2010:
Lightning Flashing on Saturn - This Cassini movie -- the first of its kind -- shows lightning on Saturn's night side flashing in a cloud that is illuminated by light from Saturn's rings.
Apr 14, 2010:
First Lightning Flashes on Saturn - NASA's Cassini spacecraft captured the first lightning flashes on the planet Saturn when it captured these images of Saturn's night side on August 17, 2009.