[alphaxikt]

If you like fish, dill is really good one to have around. If you like to cook beef or chicken, McCormick's Grill Mates are great - they have all the herbs/spices/garlic in them and you can either sprinkle them on meat or make a marinade just by adding vinegar/oil usually.

I'm a big fan of Johnny's Seasoning Salt... I don't know what's in it, but it tastes great on potatoes and can be used to make taco meat...

edited to add: cumin is great if you like to cook BBQ or Mexican food... and it's not a spice, but red wine vinegar is pretty useful to have around