This reciepe calls for beef tenderloin, but any meat will do. Skirt steak, flank, chicken, pork tenderloin, etc..
If using a flank or skirt, generously coat with veg. oil before rubbing in the dry ingredients. A thin flank or skirt should cook on high (450-500 on the grill) for 2 minutes per side, if not a bit shorter. A full 2 minutes on each side results in a nearly well done but still tender meat.