The following photo is my favorite because it includes colorful Famicom carts as well as Super Potato's similarly colorful signage.

For pics of the store's Dreamcast and Mega Drive sections, as well as photos of Yamamoto's pick-ups, check out this Flickr set.
Said Flickr set includes photos of other drool-worthy sites, by the way--such as the Dragon Quest-themed Luida's Bar, a shot bar called Muteki Mario and the life-sized Gundam statute that resides on Odaiba, an artificial island near Tokyo.