I've just recently started playing around with making spice rubs and i hit on one that really turned out well. It's based off of Paprika, Chili Powder and Garlic Powder (probably a tbsp of each); and to that i add about a table spoon of crushed red pepper, cayenne pepper, black pepper, a pinch of salt, touch of rosemary, a bit of thyme, dried cilantro and oregano. It's awesome when you add some olive oil to make a paste and let it marinate for at least three hours, but it works really well dry, too. I change up the spice levels depending on who's eating with me (i use more cayenne and red pepper with the heat lovers). It comes out with a multi-layered flavor with the flavors kind of coming in waves. Very enjoyable on chicken or salmon. I haven't tried it on beef yet. Do any of you have some homemade rubs you'd like to share?