I was up in Boulder this past Saturday walking around on Pearl Street and happened across what I thought was a wine tasting room that had a happy hour special, so I went in -- $2 off a glass caught my attention. It wasn't until after I had consumed a couple of glasses of wine (the chardonnay was pretty good, but the Cab Franc was excellent) and was in the bathroom that I realized why the name of the place sounded so familiar and why the wine menu was quite limited for a wine bar.
The Blending Cellar, aside from providing a cool atmosphere, good music, and reasonably priced, solid wines by the glass is notable for it's namesake: allowing you to blend your own wine. If you opt for the blending session, it's $15 and you receive blending bases and personalized instructions that will allow you to create Cab, Merlot, or Cab Franc. Should you like your wine, you can purchase bottles for $25 per bottle (3 bottle minimum) and even design your own label.
I know what I'll be doing for Christmas presents this year.
p.s. -- if you go to their site, click the "About us" link, and give them some pretty basic information, you can become part of "The Blending Cellar Pearl Street Club," which provides some discounts.
Link -- The Blending Cellar