like dude said,all you need is salt and pepper.
but on a side note what alot of people forget it steak is a thick ass piece of muscle,when a muscle heats up it tightens up,so after cookin a steak if you can throw it in a low temp oven or somehwere where it wont cool down too much but not cook anymore for a good ten minutes,the piece will relax and tenderize in its own juices,its never a good idea to start cutting into a new york right off the grill,itll be tough as shit and all the juices will spill out