Operas I have been to

[azsa]

L'Italiana in Algeri (An Italian In Algeria)
Il Barbiere di Siviglia (The Barber of Seville)
Nabucco
Aida
Carmen
Rigoletto
Le Nozze de Figaro (The Marriage of Figaro)
Die Zauberflöte (The Magic Flute)
Don Giovanni
Falstaff

I like Rossini's work the best.