Special Effects Websites?

[Dave2]

Are there any websites that discuss how the producers made the assorted special effects in the Stargate universe? How was the blue stuff put in the circle and make that swooshing sound when they walked through? How were the goa'ulds made? How did they create the transfer of Selmak or of Jolinar by mouth (yuck)?
Thanks.

[KEK]

There are various special features on the DVD's that show some of the techniques, you could buy those, but I don't believe there are any sites dedicated to it.