Symon's Valley Ranch is a really awesome farmer's market that just re-opened in Calgary. It's a really neat place to go if you want to buy local produce, cheese, meat, bread, and other organic products. There's also lots of parking available.
A few standouts that I found:
Papa Chocolat: The guy who runs this chocolate stand also used to own Bernard Callebaut chocolates. The chocolate is absolutely fantastic! You can also buy chocolate ipad's and iphone's, which are pretty novel and you know won't be made of that cheap wax chocolate.
Blue Door Oils and Vinegars: This place has a huge selection of olive oil's and balsamic vinegars. The average price for the oil or vinegar is $12 for 200 mL or $18 for 375 mL. They have everything here from traditional balsamic to raspberry balsamic to garlic olive oil. You can also try every single oil and vinegar before you buy it.
Eden Essentials: Finally, a beauty product place that is dedicated to using all natural ingredients. They have everything from soap to lip balm to nail polish. I picked up a bottle of purple sparkly nail polish for $9 that is super cute.
The Cucumber Man: My parents swear by this place for produce. It has some of the best tomato's I've ever seen!
They also run a BBQ for charity here that supposedly sells fantastic roasted corn according to some people there.
If you're in the area, it's a fantastic farmer's market worth checking out. I wish it was located in Vancouver, because I would definitely frequent it all the time.