Just don't leave the house without Basil and Oregano. Not the generic basil, that doesn't have that sweet smell. I like Savory, it tastes a little bit like both mint and oregano. Rosemary's only really good for casseroles with a heavy taste, it goes good with beef. On the other side, if I want to balance out something light and sweet with a heavy spice, Bay leaves are great.
If I'm stuck with rice I like to use curry powder to make things interesting. With boxed Mac'n'Cheese, I tend to like it spicy. I like chives, used to use onions all the time until I started going to college where its rude to smell like onions all the time. I even found a purpose for dill weed (fish), though I still have yet to find a good use for Parsley's taste. Guess it just remains a garnish.