theory11 — Magic Tricks & the World's Finest Playing Cards

Liquify and Watermark?

Yes, the main methods are completly different. I think Watermark is more practical and Liquify is more of a cool method.
 
On the DVD The Sankey/Skutt Sessions, Mike Skutt has an effect called "Mr. Tea" that also resembles these two effects, but again uses a completely different method.