Since you like the death/opera vocals, you really ought to check out Tristania. I think you'd really like them.

I have heard of Apocalyptica, but I've never HEARD them. ^_^ I'll have to check them out.

I love classical elements in metal, especially with the combined death and opera style vocals.  I like the "beauty and the beast" concept...however cliche it may be. Lol. 

Apocalyptica is a really cool band because it consists of 3 cellos and a drummer. So classical instuments making metal AWESOMENESS! XD <3

One metal band that I always turn to, though, is Nightwish (their older stuff ONLY). Have you heard of them?

My husband is also into more of the doom metal bands, like My Dying Bride and whatnot. I think I prefer those because there is more of a classical feel, with violins, keyboards, etc. Since my preference lies in that direction, I also like bands like Tristania--their album Widow's Weeds is the best.

I'm a metal-head, so that's the only genre I will be pulling from...

THE LIST!

Leaves' Eyes

A "symphonic gothic metal band with folk elements from Norway and Germany."

Female-fronted with male death accent vocals, viking themed

Symphony X

An "American progressive metal band founded in New Jersey."

Male-fronted, FANTASTIC guitar work, and thought-provoking lyrics.

Epica

A Dutch opera-driven symphonic metal band.

Female-fronted, AWESOME is the only necessary word.

Kamelot

American power/symphonic metal with a Norwegian opera-trained vocalist.

Male-fronted, more power than symphonic, their album "Epica" was the inspiration for the above band's name and Simone has performed duets with Kamelot...just...FYI.

There's plenty more to suggest, but I'll start with these four. <3

I'll list some of my current faves in here soon.

I'll start:

• Sigur Ros - Icelandic ambient dream pop? Very soothing. I can listen to this on the bus while falling asleep, but it's also in constant rotation in both my car and my ipod. You can check them out here: http://www.sigurros.com
  
• Royksopp - electronic dance/trance/ambient. They just came out with a new album after years of hiatus. They're one of my all time favorite bands, and you can listen to them here: http://www.royksopp.com
• The Books - experimental folk. You can find samples of their music all over their website: http://www.thebooksmusic.com
• Venetian Snares - jungle/drum 'n' bass. I don't normally go for this type of music, but their album Rossz Csillag Alatt Született just blows me away. Listen to the fifth track, Hajnal, for an awesome experience. Their main website is here: http://www.venetiansnares.com I don't know if you can listen to the tracks there, but I think they have a myspace and whatnot where you can.
• The Mars Volta - progressive rock. Insane guitar riffs and killer beats... And the lyrics sound like something out of a nightmare. I guess each album tells some strange story, and I think I understand some of it, but you glean a bit more with each listen. Definitely worth your time if you haven't heard them already. http://www.themarsvolta.co.uk

I have more favorites, but I'd like to hear yours too!

http://zarat.us/tra/offline-ga.....rsion.html

Download it! You will not be disappointed.

Basically its a bot which will IM two people, and initiate a conversation with each. After a little, it stops responding and sends your messages to the other person. The other person however has no idea they are talking to a real person and thinks they're still talking to the fishbot.

You <----------> AdjectiveCoho <----------> Other User

Kinda like a 3 way call where you cant tell which of the other two people you're talking to.

Kind of like a cross between the minicities:  http://skullxia.myminicity.com/

And the D&D Tiny Adventures on facebook: http://apps.new.facebook.com/tinyadventures/

But there's a bit more stuff to be done/choices to be made.  It's good if you just want something to check in on a couple times a day... not if you're looking for something extremely involved.