Love buying Thai curry pastes for quick curries. Also I know the grandparent poster asked for easy recipes, but if you want one that's ridiculously involved (~30 min of prep if you're really quick, and ~3 hours of intermittent watchful stirring) but also ridiculously tasty, check out beef rendang. Lovely, very spicy, 'dry' curry with incredibly tender beef.
Hah, I've made this before and didn't know what it was called! I had it at a local Thai restaurant under the name "Kua tender beef", and decided to try to replicate it at home. It's so delicious! I wouldn't call it "ridiculously involved" (I've made phõ from scratch), but yeah, it's a bit labor intensive.
