Big Brother (2001-2025) - Season 1 Episodes and Ratings

The launch of Big Brother Australia sees Gretel Killeen introduce the twelve housemates entering the house, as they bid farewell to their loved ones for the last time and settle into their new home for the next three months. Highlights are also shown of their first night and dinner.

Highlights from Day 2 in the Big Brother House. The housemates receive their first task and must decide on their first shopping list.

Highlights from Day 3 in the Big Brother house. The housemates continue to practice for the weekly task. Gemma has to leave the house temporarily. The housemates are tasked to build a barbecue.

Highlights from Day 4 in the Big Brother house. Big Brother conducts the final test to determine whether the housemates have passed their weekly task.

Gretel Killeen hosts a special episode as the housemates nominate who they want to face the public vote for eviction for the first time.

The four housemates compete for $100,000 when Gretel joins them for a special challenge consisting of everything from obstacles to Charades

A look at how sex, nudity and relationships are treated on Big Brother across the globe.