Operatic Rock?

I'm really into bands like Nightwish.
Things with a orchestra but still quite rock/metal like?

Recommendations?

Epica
Angtoria
Within Temptation
Imperia
Theater of Tragedy
SIrenia
Octavia Sperati
Kamelot
In Tenebris
Leaves Eyes
Tristania
Moonspell

Therion, they are operatic metal, the best in that genera. They were one of the first bands using male and female choirs, great stuff

Electric Light orchestra (ELO)

Bjork-Bachelorette
Bjork-Amphibian
Bjork-Verandi
Bjork-Sod Off

Therion
Within Temptation
Lacuna Coil
Rhapsody
Hammerfall
Leaves Eyes