If you're an avid cyclist or even just a recreational weekend biker, Mellow Johnny's will make you feel right at home. They have all of the gear you need and also offer group rides at several different times throughout the week. Did we also mention it's Lance Armstrong's bike store?
The Whole Foods HQ on Lamar and 6th wears the crown as their flagship store with everything healthy you could ever want and great BBQ too. Uncork a bottle of wine and head up to their rooftop to enjoy your fresh goods.
Waterloo is the kind of record store you always wanted to loiter at in the 90's -- an overwhelming amount of great albums on both vinyl and CD and a staff who will spend all day talking about it without you. Throughout SXSW and the year, they have live shows with free beer too.
There is a reason Book People is thriving as the best local bookstore - no matter what you're into, they have the book or magazine for you. Check out their lineup of great speakers and authors who stop by for readings and signings all the time.
It only makes sense that Austin would have an entire store dedicated to Lomography. If you aren't into this type of photography yet, check out this store on Congress to take their workshops or buy their lomography cameras.