Yeah, if you chunk a bunch of old computer contacts and parts in aqua regia, then all of the gold, platinum, and palladium will go into solution. If you add a conc. solution of ammonium chloride, then it will react with the formed chloroplatinic acid to precipitate as ammonium chloroplatinate, which can be used to make platinum dioxide, which is an extremely efficient hydrogenation catalyst. If you add some other chems, the gold precipitates as a nice little legal profit for you. The palladium will form palladium chloride, which we all know what that can do. I'm not sure how to precipitate it from the solution to get a reasonably pure product, but I'm sure it can be done.
I'll check out that link, though, thanks.