• Make it rain:

http://www.youtube.com/watch?v=CAVUCNG5rFI

• Change a sky:

http://www.youtube.com/watch?v=pE7520fziRs

• Get a tan:

http://www.youtube.com/watch?v=-lnisrl0jfA

• Beams of sunlight:

http://www.youtube.com/watch?v=Otvk6x_r4EE

• Starburst diffusion filter effect:

http://www.youtube.com/watch?v=fuj8_TWlsew&feature=channel