The aria is the Elvira Arturo duet from Bellini's I Puritani. It is from Act III and it is just an excerpt of the aria.
Toreador - From act two of the opera Carmen.
Not racist at all. Italian food, Italian music, American people eating and singing.
Show Me What I'm looking for- Carolina Liar.
Well, if I know the commercial you mean, it is actually not opera. (And, I haven't seen Casino.) It is from the St. Matthew's Passion by Bach. I really wonder why they picked this particular piece of music? I love it, and I really enjoy poker, but I'm not sure I see the connection... Check out this youtube video to see if this is the commercial you're talking about (the music from the Pokerstars commercial starts about 0:30). http://www.youtube.com/watch?v=j7EtnprvVjg Here is the translation: "We sit down in tears and call to you in the grave". (Very funny, for a commercial that is supposed to entice people to gamble!)
Within this context -- any Verdi opera would be considered a classical opera.
Opera
Carmen is the name of the opera and Habanera is the song http://www.splendad.com/ads/show/2698-Bertolli-Opera
placido domingo
Celeste Aida
It is "Recitar! Vesti La Giubba" from the opera Pagliacci. (the part you hear in the commercial is about 1:50 in).
I don't know their names but they are legitimate opera singers.
Darren Smith.
Denyce Graves.
maria callas
Without more specific information, it is difficult to identify the exact opera song used in a past car commercial. Many car commercials have featured opera music, as it can evoke a sense of elegance and grandeur. However, you can try searching for the brand or specific commercial online to see if any information is available about the opera song used.
From the sOap opera all my children
If you are talking about the commercial from around 1980, it was an improvised appoggiatura - according to the woman who sang it!