Magic Hat out of Vermont has part of their lineup in bottle shops and in some grocery stores, including Circus Boy, #9, and Lucky Kat.
I have no visual confirmation, but I hear reports that Sam Adams Imperial Pilsner is on the liquor store shelves. This is an unfiltered Pilsener on steroids and a great beer. I believe they are sold in Four packs.
Schlafly Pumpkin Ale is also in the area. If you have not had this seasonal, I suggest you try it before it sells out. It is one of my favorite pumpkin beers. It is sold in liquor stores that carry craft beer.
Avery Fifteen (one time release) and The Kaiser Imperial Oktoberfest (seasonal) are now available in 22 ounce bottles. The Fifteen is not for the inexperienced palate,. It is a very sour, funky beer and smells like a barnyard. If you love beers using brettanomyces yeast strains, then you might dig this beer. Both of these are sold in liquor stores that carry craft beer.
For folks near downtown- you should find these beers at Midtown Wine and Spirits and Frugal MacDoogal. On the west side, Mr. Whiskers is a liquor store with a decent craft beer selection. Those of you out in Williamson County, try Woody's Smokes and Brews and Red Dog Wine and Spirits. Murfreesboro folks should find all these beers at Stones River.