Oh my. Filet Mignon.
First off, lets define what filet mignon really is. Its a cut from the tenderloin, which runs through the short loin (also where strip steak originates). This highly- prized cut of beef only represents 2-3% of the total animal. That's why its so rare, and tends to be more expensive then other cuts.
In our house we call it the "special occasion steak" because we only taste it on well.. special occasions like my birthday.
The secret for cooking it is quick and not long. Share this steak with people you love because once you do they always come back for more!