(Click to go to the websites for these cakes)

From the simple:

 

Dragon made from shop bought ingredients

 

To the sublime:

 

Awesome dragon cake

 

Dragon cakes seem to run the whole gamut of cake-building techniques.

Piped butter icing:

Piped butter icing dragon cake

 

Sugarpaste shapes and airbrush

sugarpaste chinese dragon cake

 

 

Chocolate jigsaw:

 

Chocolate jigsaw dragon cake 

 

or even fruit!

 

Kiwi dragon

 

I think my favourites for a balance of ease and looks would probably be the buttercream (love the idea of mixing colours in the piping bag) or cut sugarpaste (or marzipan.. but then I'm addicted to marzipan) shapes layered to make scales and fins. For those of us without an airbrush, I think that marbling the sugarpaste would probably work really well here.