My nomination is ropa vieja. Commonly found in Cuban restaurants. I always see this listed as a house specialty and I often see this highlighted when people talk about Cuban or Spanish food.
Oh if I only had a dollar for every wet, overly chewy, jaw-numbing, tasteless piece of meat found in your average ropa vieja. RV means "old clothes' in Spanish, and, although I agree this could be a great dish, it is almost always awful. Truly closer to eating old clothes than most restaurants would like to admit.
Instead of serving RV, I wish more places would serve vaca frita or 'fried cow.' Fried beef and onions is usually transcendent, and I am surprised it doesn't make it's way onto menus more often and finally knock RV off its pedestal.