Rakhi Sawant vs Kashmera Shah - Friends turned foes! The two featured in the first season. Kashmera got into plotting and turned all the housemates against Rakhi, which led to numerous fights in the house. Rakhi ended up having a fight with almost everyone in the house, over the smallest of things like a coffee mug.
Kamaal Rashid Khan vs Rohit Verma - In the third season of Bigg Boss 3, Kamaal Rashid Khan, popularly known as KRK, had a verbal spat with fellow contestant Rohit Verma. The spat got so aggressive that KRK threw a bottle at Rohit after which the former was evicted from the house.
Dolly Bindra vs Manoj Tiwari and Shweta Tiwari - The "Baap pe mat jaana" fight between Dolly Bindra and Manoj Tiwari is one of the biggest hits in the history of Bigg Boss. The two got into an altercation after Bhojpuri singer and actor Manoj wanted some eggs for breakfast, which led to chain reaction. Dolly also got into a physical fight with actress Shweta Tiwari. The two started a fight the first day when Dolly went into the show as a wild card.
Imam Siddique VS Urvashi Dholakia and Aashka Goradia - Imam was the most eccentric contestant Bigg Boss had seen. From clothes, wigs to behaviour -- everything about him was loud and loony. Imam was seen arguing and making comments about Urvashi Dholakia's life. He was seen questioning her parenting skils. In another incident, for which Imam was thrown out of the house, he shed all his clothes and slipped into a skin coloured body suit to irk fellow contestant Aashka Goradia. He had an undergarment to cover his privates but he soon shed that, too.
Sidharth Shukla vs Rashami Desai - In the last season, actors Siddhant Shukla and Rashami Desai got into a very heated fight when Sidharth asked Rashami if she is a "naukrani" of fellow contestant Asim Riaz. It happened when Rashami had intervened when Asim and Siddhant were talking about a task. Rashami got angry and questioned: 'Tere ghar mein kaisi ladkiyaan hoti hain (what kind of women are there in your house)?'. To which, Sidharth replied: 'Teri jaisi nahi hoti (Not like you)'. Rashami then asked: 'Kaisi (like how)?', and he said: 'Rashami Desai jaisi'. The whole scene ended with the two screaming at each other.