Huge fan of the pizza dough. For us, produce is hit or miss on being a good value. It either totally is or isn't. But they don't sell by weight, so you have to be able to compare typical weighted prices to per item prices.
I really like some of the cereals, which are far cheaper than the grocery store.
I also like many of the seasonal items and juices and nuts. The cinnamon almonds and the honey sesame almonds are delicious.
I view Trader Joes as great for healthier, somewhat already prepared food. Lots of items that require heating only or a minimal amount of work to prepare.