Oddly enough, I've always been fascinated by Australian accents. It somehow made me particularly happy especially after I watched this video (https://www.youtube.com/watch?v=9QCgqQdmr0M) where I couldn't understand a single sentence. I then tried to learn this accent in Sydney and was discouraged by many of my Aussie mates. Now I just have a little bit of the Sydney accent, which is roughly /ai/ -> /oi/ (bike -> boi-ke), /ei/ -> /ai/ (day -> die). I don't know why, but I like this accent, it sounds and feels warm, open and full.

Try this Scottish accent: https://www.youtube.com/watch?v=SUZyNLZZjMs

Or this MLE (Multicultural London English) one: https://www.youtube.com/watch?v=B5bqYlsXDdg

An amusing anecdote, especially the Superman comparison at the end...

  "but I had nothing on bar me jocks"

You seriously couldn't understand a single sentence?