Lenny Hoffman, a very prolific space builder from several years back has some new robot themed build on his flickr stream. Check 'em.
Also returning from a hiatus is smod, who had posted some cool stuff a year back or so. However he says that he's moved beyond the plastic hobby, and this post is more of a farewell:
"The little boy inside me who loves his Lego has pretty much gone so this is probably the last MOC you'll see from me in a long time. but on a brighter note I'm thinking about turning this account into a more art orientated one.. we'll see."
I look forward to seeing some of his art-related uploads in the future.