What are some good opera songs?

Mozart:

Der Holle Rache (Queen of Night Aria) (From Die Zauberflote) http://www.youtube.com/watch?v=C2ODfuMMyss

O Zittre Nicht (Die Zauberflote) http://www.youtube.com/watch?v=7EUOmdxo2jE

Ecco La Marcia (From Le Nozze di Figaro) http://www.youtube.com/watch?v=IP8XZ8_oeuY

Ah Tutti Contenti (Le Nozze di Figaro) http://www.youtube.com/watch?v=pFu8DmPFgdA

Cinque, Dieci, Venti, Trenta (Le Nozze di Figaro) http://www.youtube.com/watch?v=iF655YJolQI

(Don Giovanni) Commendatore Scene http://www.youtube.com/watch?v=D8uDJXA_aNA

Overtures to Le Nozze di Figaro, Don Giovanni and Die Zauberflote http://www.youtube.com/watch?v=x8UWb736Yc0

Turkish Finale (From Die Entfuhrung aus dem Serail) http://www.youtube.com/watch?v=HFEFSFAg9LQ

Beethoven:

Fidelio Overture http://www.youtube.com/watch?v=8DTWPZ682ZU

Rossini:

Figaro's Aria (The Barber of Seville) http://www.youtube.com/watch?v=012dIqLM_qo

I'm sorry but "Time to say goodbye" or even its Italian version "Con te partiro" is NOT opera. It is an Italian pop song.

If you still want some opera recommendations, let us know and we'll be happy to oblige. Bear in mind though, they will not be like Bocelli's pop song.

Edit: Very well sir...

I suggest that you listen to the male and female arias (and some of the chorus numbers) from the following opera:

Il Barbiere di Siviglia (The Barber of Seville) - Rossini

Largo al factotum

Un voce poco fa

Don Giovanni - Mozart.

Ah, chi mi dice mai

Madamina, il catalogo è questo

Là ci darem la mano

Dalla sua pace

Batti, batti o bel Masetto

Fin ch'han dal vino

Eh via buffone

Deh vieni alla finestra

Don Giovanni! a cenar teco m'invitasti

Tosca - Giacomo Puccini

Recondita armonia

Vissi d'arte

E lucevan le stelle

La Boheme - Giacomo Puccini

Che gelida manina

Sì, mi chiamano Mimì

O soave fanciulla

Quando me'n vo'

Carmen - Georges Bizet

L'amour est un oiseau rebelle

La fleur que tu m'avais jetée

That should keep you going for a while.

Nessun Dorma (hear any or all of the Three Tenors performing it) from Turnadot

Prologue from Britten's Turn of the Screw

Auto de Fe (What a Day) from Candide; I absolutely love the humor of it, as well as the orchestration, although it's not the most classically operatic song out there

Glitter and be Gay from Candide

Madamina, il catalogo è questo from Don Giovanni

These are obviously from my personal (and limited taste), so I'd also recommend going to the local library and borrowing DVDs and CDs to see what you like, but this should give you a start.

Bocelli is not an opera singer, and time to say goodbye is not an "opera song".

my favorite Opera is La Boheme

a good song is gouryella - tenshi check it out