The original place Guy Fieri visited in Key West, FL has closed so am not sure if this place in Islamorada, FL are the same guys or got bought out but I'll point you to this one and leave me a comment if you find out more details.
This place has thee best burritos Ive ever had. It is absolutely delicious. You must not leave without trying. Remember, they are closed on Sundays, only accept CASH and there is no seating. TAKE OUT & DELIVERY only.