I like to use McCormick's Fiesta Citrus on chicken and beef if I'm making tacos (I also use sliced fresh jalepeno, onion, and garlic). It's salt free. And McCormick's Italian Blend if I'm doing a few specific Italian-type dishes.

I also like Adobo (it's a brand of meat flavoring - usually found in the Mexican aisle)..

Otherwise, I try to use minimal seasoning - salt & pepper & butter - which, as Michael Symon says, is all you need.