I did think that 'The Office' was brilliant but, like many successful TV comedies, it was an ensemble thing - several excellent comic actors working together to create something original and exceptional.
I think that the real problem with Ricky Gervais is that he's been over-hyped. He tends to do the same thing over and over (ie. playing an insensitive, pathetic idiot continually getting himself into embarassing situations). I thought that 'Extras' with its emphasis on guest Stars and Celebrities was fairly tiresome.