Portland, OR: Barista
Spokane, WA: Indaba
Seattle, WA: Milstead & Co.
Seattle, WA: tougo coffee co
Los Angeles, CA: Cognoscenti Coffee
Chicago, IL: Wormhole Coffee
Detroit, MI: Astro
San Francisco, CA: M'avelous
Los Altos, CA: Red Berry Coffee Bar
San Francisco, CA: Jane
Oakland, CA: Bica Coffeehouse
Oakland, CA: modern coffee
Nashville, TN: dose. coffee and tea
Nashville, TN: Barista Parlor
Los Angeles, CA: Spring for Coffee
Los Angeles, CA: Coffee Bar
Los Angeles, CA: Balconi Coffee Company
San Carlos, CA: The Grind Coffee Bar
Montreal, QC: Cafe Myriade
Vancouver, BC: Revolver
Toronto, ON : Mercury Espresso
Las Angeles, CA: Paper or Plastik Cafe
Austin, TX: Houndstooth Coffee
New York, NY: Joe Pro Shop
Montreal, QC: Caffé in Gamba
Chicago, IL: Caffé Streets
New York, NY: Sweetleaf
Denver, CO: Denver Bicycle Cafe
Baltimore, MD: Spro
Lexington, MA: Ride Studio Cafe
Sacramento, CA: Broad Acre Coffee
Belmar, NJ: Turnstile Coffee
Camarillo, CA: Element Coffee Lounge
Somerville, MA: 3 Little Figs
Los Angeles, CA: Cafe Dulce
Arcadia, CA: Taza Coffee
Austin, TX: Frank's
Edmond, OK: Café Evoke

These are examples of places that serve coffees from multiple roasters using various brew methods. I suspect that one could have a terrific coffee in each of them. Certainly I have in the five that I've actually been to. And I think it would be good to have a list of such spots for the Home Barista. Suggest ones you know about and I'll add them to this list. (Credit goes to Jake of Barracuda Coffee Co, Richland, WA who advised me of the existence of Indaba, thereby inspiring this idea for a thread.)

My two favorite LA cafes:

Cognoscenti Coffee: 4 Barrel, Heart, Handsome, Coava last time I was there.
Cafe Demitasse: Equator, Augie's, Handsome, Portola (and full disclosure, occasionally stuff from me).

The Wormhole Coffee, Chicago

I don't know the extent, but I know that Metropolis Coffee has a guest coffee program. They have a rather nice write-up from a year ago explaining their logic being along the same lines of what beer brewing companies have known for a while, cooperation is the new competition.

Chert wrote:Portland, OR: Barista
Spokane, WA: Indaba
Seattle, WA: Milstead & Co.
Seattle, WA: tougo coffee co
Los Angeles, CA: Cognoscenti Coffee
Los Angeles, CA: demitasse
Chicago, IL: Wormhole Coffee

the_trystero wrote:Los Angeles, CA: Cognoscenti Coffee: 4 Barrel, Heart, Handsome, Coava last time I was there.
Los Angeles, CA: Cafe Demitasse: Equator, Augie's, Handsome, Portola (and full disclosure, occasionally stuff from me).

UltramaticOrange wrote:Chicago, IL: The Wormhole Coffee, Chicago

Personally recommended:
San Francisco, CA: Mavelous
Los Altos, CA: Red Berry Coffee Bar relocating but not open yet to a shop more then 2x previous size.

Heard good reports, but haven't tried yet
San Francisco, CA: Jane
Oakland, CA: Modern Coffee Really need to try this one too, maybe after the HB Blue Bottle Oakland Tour

And RBCNYC. In nyc, obviously.

-Dave-

These are two that I end up dropping into every now and again that serve a few different roasters, although I believe they do have a primary roaster.

Berkeley, CA; Local 123 (Four Barrel with rotating roasters)

Oakland, CA: Bica (Ecco Primary?)

I could be wrong on the Ecco being primary there, as I do get out there nearly as much as Local 123.

Nashville, TN: Barista Parlor and Dose.

Barista Parlor is brand new. They have ~6 roasters at a time and brew with many different methods, including espresso from a Slayer. Dose normally has 2-3 featured roasters and also brew with a variety of methods.

i'm a big fan of Cafe Demitasse, also.

I also enjoyed Balconi Coffee over in West LA (near sawtelle)
11301 W. Olympic Blvd #124
Los Angeles, CA, 90064
I know they offer Handsome, Cafecito Organico and maybe some others.
They do 100% siphon for their coffee and use a la marzocco linea with mahlkonig k30 grinder for espresso.
Also, i love that they're open till 10pm.

Gotta add Astro in Detroit. They rotate Ritual, Handsome, Sightglass, Anthology.

They are very consistent - one of the few places where regardless of barista, I know I'm going to get a good shot, with a good amount of body. Baristas here all seem trained to taste throughout the day and adjust as needed. Unpretentious, they love talking about coffee with geeks like me. Open to discussion, sharing, and teaching.

I usually have to get a pourover drip too.

Los Angeles, CA: CoffeeBar http://coffeebarla.com/
Pasadena, CA: The Market on Holly http://themarketonholly.com/