Here's one I use for steak (marinated for hours before hand) and mushrooms (bamboo skewer them and marinate for 30 minutes tops):
soy superior sauce --- get this in your asian food store, it's the 80 weight of the soy sauce world; sort of a combination of soy sauce and molasses.
Sriracha pepper sauce. Hot pepper sauce preserved with a flavorless vinegar. Again, asian food store. The best stuff is made in Rosemead California. If you haven't encountered this, you should get to know it. This stuff is the best hot sauce I've seen. Pure pepper punch, no vinegary or chemical flavors.
Lemon Juice
Lemon Zest (juice the lemons, then scrape the edge of the lemon peel off)
Ginger
Garlic
Peanut Oil
Onion
Puree that stuff, let the steaks sit in it, and damn if it ain't good.
How much ginger? pinch? And how many lemons?