I love the frozen roasted corn kernels at TJ's. I also like their pre-cooked/frozen packets of rice, both white and brown. And their frozen ham & gruyere "pizza" on puff pastry (Tarte d'Alsace). Their frozen food section is amazing.
frozen - Trader Joe's | Trader Joe's This doesn't eve show all of it.
And they have the same brand chocolate-filled frozen croissants that Williams-Sonoma wants $40 plus shipping for. Their cinnamon-sugar graham crackers are heavenly. Their tomato-red pepper soup in a box is the best boxed tomato-based soup I've ever had. At Christmas they have minted coffee I like to stock up on.
I could go on and on, but haven't been in a TJ's since we left Pittsburgh, so I've forgotten much of the great things we would purchase there. I need a freezer truck to go make a run.