I could be here all day answering this one! If you just want arias/ bits of opera, then try getting your hands on some compilation CDs of singers like:
- Pilar Lorengar on Decca (soprano)
- Kiri Te Kanawa (maybe the Italian opera arias one on EMI?)
- opera duet recordings maybe - the Angela Gheorghiu/Roberto Alagna one has some great pieces on it
- anything with Leontyne Price, Placido Domingo, Thomas Allen, Simon Keenlyside, Anna Netrebko, Juan Diego Florez, Luciano Pavarotti............there are a lot of great singers you should listen to, both past and present.
And another great way to get into opera is to watch some DVDs/videos - you can always 'fast forward' the bits you don't like so much! I learnt so much about opera from watching a lot of the old Royal Opera House productions on video during my teens when I first got into opera. And some of the films: 'Otello', 'Don Giovanni', 'Madama Butterfly', 'Tosca' + 'La Traviata' (to name but a few) really had an impression on me.
If you want full operas recordings, check out the rest of Puccini, I'm sure you'd love 'La Boheme' + 'Manon Lescaut'. In a similar vein to Puccini are operas such as 'Andrea Chenier' by Giordano (you'll recognise the soprano aria 'La Mamma Morta', used in the film 'Philadelphia'); also try Verdi's 'Otello' or 'Rigoletto'; and how about 'Eugene Onegin' by Tchaikovsky - great 'tunes' in this one. Then maybe move on to my favourite: Richard Strauss - especially 'Der Rosenkavalier' and 'Salome'....I could go on! But I won't......
Opera is my greatest obsession, so sorry for such a long answer! If you keep on listening and watching opera, it may just get under your skin too! Have fun