Most definitley one of the masters of Cinema 4D - 'pupi' has done some extraordinary works, including some as tester for new versions of the program. As with all the 'Masters' - there is not enough space to do them justice. You will have to 'Google' them all.
Four Projects by the Masters
Nagra IV-S
Artist: Russ Schwenkler [dangeruss]
Russ is a long time on the scene - a former GUI skinner if I'm not mistaken. This is a classic example of all the relevant techniques: modelling, texturing, lighting, rendering and presentation. Not sure of the software used, but who cares...
Glenmorangie Whisky
Artist: Youen Leclerc
I don't know much about the artist, but he can certainly produce a stunning product shot! Apparently he had access to original graphics frm the manufacturer for this, hence the stunning graphic work.
Parliament
Artist: Rudolf Herczog [rochr]
Rochr, always an inspiration. Used to use Bryce before Cinema 4D - and surpassed my wildest dreams in both programs. Check out his other works out to be truly amazed...
Some Interesting Links to Inspire:
Renderosity
Digital art site with a wide variety of content. Including my Gallery.
CG Society
Was a great site for ideas from the pro's...
Alas now defunct...
DeviantART
The ultimate art site - literally millions of examples of all art.
Behance
Design site for graphics, advertisement, photography etc
Creative Bloq
Site dedicated to design, art, 3D and everything Creative.
Gizmodo
Latest news on all that is trendy.
io9
Latest newson SciFi, Fantasy, movies etc.
NotCot
Contemporary design, of everything creative.
Yanko Design
Design, design and more design.
ArchDaily
Latest international Architecture and Interiors.
DeZeen
Cornucopia of all that is the latest in design.