Honestly, the whole catalog is must have. And I am speaking as a user of the products. I honestly don't know what I would do without my kitchen tools - they make being in the kitchen simple and easy.
It really depends on your needs, but here's some must haves to check out.
Food Chopper - This is the best product. You can chop so much with this in such a short amount of time. You can do any vegetable - no more getting emotionally involved with your onions, for example - do cooked meats. I mean this and the Ultimate Slice and Grate can take the place of any Food Processor. It's top rack dishwasher safe and comes with a 5 year warranty
Stoneware - we are famous for our stoneware. Stoneware is the best baking piece - better than glass and metal. It cooks evenly, you can't burn stuff on it, its porous so those ice crystals from French Fries are drawn away so you don't get soggy fries and you don't have to turn them. Best of all - easy to clean! Never put them in the dishwasher, just run them under warm running water and use the little pan scraper that comes with it if necessary to get any residual off. You can cook anything in a stone that you can in a glass or metal pan. Find a piece that you can try in your kitchen and just try it. If you are looking for a good Try-Me piece, look at the Stoneware Bar Pan. Totally multi-purpose. Not only can you do bars, but you can do chicken breasts, pork chops, tater tots, french fries, fishsticks. You can do entrees, appetizers and desserts on this piece.
Well this post is already long, so I will let it go at that, but suffice to say, I could tell you good stuff about each and every product!