All of these could be done in any 3D-design program.
The first one has got C4D written all over it (looking at the shader), but the others could be done in any 3D-program:
3DSMax, C4D, Carrara, Lightwave etc.
Its not the object itself that makes you say "wow", but its shaders/texturing and lightning (cos otherwise you can use a free 3D-program to make them --> there mentioned in our 3D section)
Before you spend a lot (and i mean a lot) of monney on such a program, try the free ones first to see if you like 3D-modeling. Dont worry too much yet bout how they made there shaders, cos a lot of ppl get disappointed when they start modeling.
I'll try to make a similar example.
EDIT:
I have to admit i didnt want to make same thing, k
here is a logo, without the textures/shaders applied
The shape was originally drawn in Illustrator, then imported and extruded in Carrara.
No shaders applied, but i cheated a little by using a technic called hdri.
anywayz, this is the result in bout 15 mins (10 of which for rendering on my slow pc):
Edited by Scythar, 06 October 2006 - 04:59 PM.