The guy made the Golden Globes actually bearable.
But, actually he did exactly what he was hired to do: create controversy. Let's not forget that he hosted the show last year so it's not like nobody knew what they were getting into with him. This is just an attempt at making the Globes actually relevant in some way by turning the show into a celebrity roast.
I find the whole thing rather hilarious because Hollywood is so sensitive, yet tries so hard to show that it has a sense of humour by hiring someone like Gervais. Just look at the boo-hoo-cry-me-a-river response by Downey Jr. (and others who didn't like Gervais). Oh no someone made a joke about you cause you were a fuck up a few years back!
Anyway, it's great publicity for Ricky Gervais.