Nahh, there's plenty more games to cover that aren't the really super common stuff. I don't think that many folks, outside of MAME hardcores, really know about games like Dommy & Peter Pepper's ICF, for instance.
But hell, he's covered some games that I'd say were pretty darn common, like I-Robot, Astro Blaster, Reactor and Warlords, but who cares. I still like reading about 'em sometimes, regardless.
Or he could go a different route altogether and review games that aren't necessarily great...just weird or unique, or downright awful, ala the Angry Video Game Nerd. No shortage of material there.