Two celebrities will be evicted from the Big Brother house on Wednesday night.

The public has already started voting for who should win the show on Friday, and Wednesday's evictees will have the lowest votes so far, a spokeswoman for Channel 4 said.

Sky Bet has Tommy Sheridan and Ben Adams as 5/2 favourites to be evicted, and Verne Troyer as 1/3 favourite to win outright.

To mark one of the most momentous days in US political history, the Celebrity Big Brother housemates were shown the inauguration of incoming US president Barack Obama on Tuesday, and were set an American-themed shopping task.

The task included four aspects - Adams and La Toya Jackson were set the "rodeo challenge" - learning to ride the bucking bronco. Firebrand politician Sheridan was told to try his hand at baseball and hit balls pitched into the garden by Big Brother.

Terry Christian and Ulrika Jonsson were ordered to take part in a pie-eating contest, and Coolio and Troyer were asked to become bikers and complete a "Route 66" road trip.

Wednesday night's evictions will be screened live on Channel 4 at 8pm and 10pm.

Celeb Big Brother day 18

    The housemates are charged with making a film of their time in the house - and they elect Verne as the director.

    They all re-enact their entry into the house, with Michelle saying "I'm Michelle from Newcastle and I get excited about everything" - before pretending to burst into tears.

    Ben takes his turn, singing: "Hi I'm Ben, I'm going to sing everything, and be nice to everybody, and never say what I really mean."

    They later decide to re-enact key scenes from the last two weeks - and Terry does a mean impression of Tina complaining about the lack of junk food in the house.

    Re-enacting the nominations, Tommy plays Big Brother and tells the others they have to decide which housemates they would like to evict.

    Verne names Coolio, because he's always exaggerating about fights he's been in.

    Michelle has been evicted, and Coolio tells Big Brother: "I kind of feel bad for Michelle, as she wasn't ready to go".

    Big Brother is giving the housemates bizarre orders for a special task - telling Coolio and Terry they must cuddle until further notice.

    Here's something we didn't think we'd see, Coolio and Ulrika have actually found a grudging respect for one another - and might be about to become friends.

    As the housemates discuss Michelle's sudden eviction, Tommy suggests the public might not have taken kindly to her crying fits when they are all facing more serious worries because of the recession.