Here's a list of some of my favorite gluten free products by category. I see it as a good way to get started with a few products that I personally think are pretty good.
Baking Mix: I like the Pamelas Baking & Pancake Mix I'm pretty happy with how the pancakes turn out and you can also use it for cookies. Its a great way to make several gluten free things without having to buy or experiment with gluten free flours.
Beer: Redbridge by Budweiser
Bread: I like Udi's bread - both the white and whole grain variety.
Breadcrumbs: Gillian's Italian Breadcrumbs
Brownies and Cookies for Delivery: Harvard Sweet Boutique. They'll send you a box of delicious yumminess in the mail. http://www.harvardsweetboutique.com. Best gluten free brownies...ever...
Cakes in the Boston Area: Celia Cakes http://celiacakes.com/ Vita made the cake part of my zombie wedding cake - it was Red Velvet, and absolutely delicious!
Cereal: Nature's Path Vanilla Sunrise (I like to call in Vanilla Surprise) Super Yummy. I also like to buy Chex- especially Honey Nut and Cinnamon.
Cookies: Pamela's Extreme Chocolate Cookies, they are pretty tasty and you can crush them and use them in baking, such as for cheesecake crusts. Pamelas Products 39439 Extreme Chocolate Simple Bites Gluten Free
Also Pamela's or MiDel's or Trader Joe's Ginger Snaps- They are all pretty tasty and I haven't noticed a significant difference amongst them all.
Flour: I like Bobs Red Mill Sorghum Flour - its very versatile - great for cooking and baking and has a nice flavor.
Granola: Udis Granola and Bakery On Main Granola Gluten Free . Both brands have a few great flavors.
Mac and Cheese: Its a tie between Trader Joe's Gluten Free Mac and Cheese and the Annie's White Cheddar Shells. I guess it depends on if you prefer shells vs. elbows or orange vs. white cheese.
Pasta: I find that Bionaturae is the most versatile Bionaturae Organic Penne Rigate Pasta Gluten Free. However I'll also buy Schar's pasta and Tinkyada as well.
What else am I missing? Drop me a comment if you have other good suggestions or have another type of product you'd like me to recommend. :)