I've only watched this a couple of times and only because there was nothing better on but I couldn't help but notice how some of the housemates look like certain celebrities.

Jessica looks like the pop singer Anastascia.

Mirabai looks like movie star Christina Ricci.

Damian (face) looks a bit like Mal Meninga (ex Canb Raiders player). It's the mono eye brow thing.

Sarah looks a bit like Meg Ryan.

Shannon looks a bit like Lisa Curry-Kenny (ex Ironwoman) or Kerry Saxby-Junna (ex Olympic walker).

Nathan of course looks like Gordon from last year's BB.