Time to crack out the Christian Death lineup jokes!
@ TrueNeutral: You, or more accurately the people who label Epica, After Forever, Within Temptation etc. goth misunderstand the difference between gothic and symphonic metal. Whilst superficially similiar, there is a lot of difference between even Tristania and After Forever, let alone Type O Negative or Moonspell.
Interestingly however, that only goes for whether they're goth. All heavy metal is gothic, in the classical sense.