Our favorite GF pasta is made by Pasta More, expensive but really good http://www.pastamore.com/pastamore/gluten-free-cid-46 We also use Asian rice noodles because they are cheap (at Asian food stores) and versatile.
When you use GF pastas of any type, the key is proper cooking and then much more rinsing than with wheat based pasta. Cooked the wrong way and they are just gelatinous yuck.
In general we used going GF as a reason to just cut out a lot of starch in general (use more lean proteins, fruits and vegetables) but for when you want it:
Udi's GF bread and buns toast up nicely, not so great just plain (my opinion)
Rice (white rice, brown rice, wild rice, red rice, and tons of other varieties at our co-op)
Quinoa
Mashed potatoes (or mashed sweet potatoes or mashed cauliflower)
My actual favorite GF bread is one I make in my bread maker using a recipe for Ploughman's Lunch Bread from Bette Hagman's great book listed below. It is incredibly good while still warm and great the following days toasted.
Don't buy commercial soups or gravy...they add flour. Keep cornstarch handy as a thickener for gravy and sauces. We eat a lot of stir fry so I switched to Bragg Liquid Amino which is a great substitute for soy sauce (which has wheat as a main ingredient).
I don't have recommendations on dessert baking mixes because I make all those from scratch (again using Bette Hagman's books). The few commercial mixes I tried, weren't as good as what I made and were WAY more expensive.
Snacks:
Blue Diamond Nut-Thins crackers
Shoestring potatoes
Hanover GF pretzels (better than regular pretzels!)
Breakfast:
Microwaved potato or sweet potato with broccoli and cheese
Eggs, bacon, and sauteed spinach
Make my own GF pancake mix to keep handy for easy pancakes (again from Bette Hagman's book)
Rice Chex or Corn Chex
If you do want the flexibility to whip up foods that are typically gluten laden, my most used recipe book is "The Gluten-Free Gourmet Cooks Fast and Healthy" by, yes you guessed it, Bette Hagman. The reason this book is super handy is that she teaches you how to make a handful of basic GF flour mixtures that you can just keep in your cupboard to whip up something. It was also a good way for me to learn what foods to be wary of and how to adapt regular recipes to be GF.