Like the article on the gnoll, there is not much to say here. Unlike the gnoll however, what I have to say about the goblin is not positive.
I prefer the goblin in the lower-left hand corner despite it being just a sketch, and from the comments I see that I am not alone (though others seem to like the third one from the left on the bottom row). The largest take looks like a kind of scrawny orc.
I guess I was expecting something more...spindly, I guess, akin to the works of Tony DiTerlizzi or something out of a Guillermo del Toro flick, though even Mike Mignola or Wayne Reynold's treatment from Magic: The Gathering would suffice.
I also like the bottom-left goblin because his gear looks a bit more cobbled, which is something that I expect from goblins (and to a point, bugbears, though not hobgoblins).