There's nothing particularly special about this group of beers other than they are all quality brews. What I do find interesting is the variety within the group. In a single sitting we can go from Belgian Wit styled beers to massively hopped West Coast IPA's and a fantastic East Coast IPA to the classic Irish stout and then a finely crafted golden ale. These beers span the states and the world.
Thanks to the creativity and craftsmanship of brewers through history and into today our society has developed a taste for quality beers and an amazing variety of them. In turn, this demand has created a fairly efficient market and marketplace that makes their collective nationwide and worldwide availability possible. But a market will always live and die with the consumer, so my message in closing is to consume!
Buy locally, but also buy globally. Try new beers (do your research so the names at the store aren't overwhelming) and keep that market alive so everyone can continue to enjoy this unique time in the history of beer consumption.