In my opinion the most overrated drama is YOU R BEAUTIFUL
My name is kim sam soon is a drama back of year 2005 . at the that time, the hallyu craze was just starting ... this drama did play a huge role to boost the hallyu boom , so i think it is highly rated...... since then the hallyu drama industry has gotten bigger n bigger also similar storylined dramas has come out now n again so, these days it doesnt give a fresh vibe as it used to -in those times... coz the concept of main female character to be "not young and not attractive" was not preceeded of ,, n not to mention young aged boyfren also, boomed frm this drama..