I'm a spice fanatic. If I opened my cupboard right now the two bottles front and center are cumin and granulated garlic. I also use a lot of cinnamon and oregano. Oddly enough I'm not a bit basil fan, except for pesto.
I work part-time at a spice store so I have more than I ever need.
Edited because I was so excited I missed the entire second page.
My chili powder consists of ancho chili pepper, cumin, Mexican oregano, garlic, and toasted onion powder. Sometimes I'll add a little natural cocoa powder, fennel, or even a bit of mustard powder.
I don't really use a premixed curry powder, but my curries always have cumin, mustard, fennel, garlic, coriander, and some paprika. That's the standard but I often mix in some premixed curry blends too, like garam masala or vindaloo.
Just a general suggestion about spices. Whole spices are good for about two years (saffron included), ground spices about a year, and herbs around a year or less. If you open a bottle and can instantly smell the spice it's probably still good.