Transformers: Revenge of the Fallen was picked as last year's worst picture at Saturday's Razzies, and Sandra Bullock won worst actress for All About Steve — on the eve of her expected Academy Awards triumph for another film.

Voters at the Razzies, which poke fun at the Oscars by giving out prizes for Hollywood's critical misfires, chose Bullock for her romantic comedy flop. All About Steve came and quickly vanished at theatres in between her 2009 hits, The Proposal and The Blind Side, the latter expected to win Bullock the best-actress Oscar on Sunday.

If Bullock takes best actress for The Blind Side, she will be the first person ever to win an Oscar and a Razzie over the same weekend.

"She's in the unprecedented position. Saturday she's the worst, and the very next night she's back on her feet, and she's the best," said Razzies founder John Wilson. "We certainly don't wish her ill at that other awards show."

Throughout awards season, Bullock has been good-natured about it, joking about the Razzies attention she has gotten along with the Oscar esteem.

Bullock and All About Steve co-star Bradley Cooper also shared the Razzie for worst screen couple.

The Transformers sequel won two other Razzies, worst director for Michael Bay and worst screenplay for Ehren Kruger, Roberto Orci and Alex Kurtzman.

Bay and his team probably will not lose any sleep over it, though. Though reviled by critics, Transformers took in $402.1 million US domestically.

Battlefield Earth named worst film of the decade

The worst-actor Razzie went to siblings Kevin, Joe and Nick Jonas for Jonas Brothers: The 3D Concert Experience. Billy Ray Cyrus, was named worst supporting actor for the big-screen Hannah Montana.

Sienna Miller received the worst supporting-actress Razzie for the action tale G.I. Joe.

Will Ferrell's action comedy flop Land of the Lost was tied for the group's worst remake, ripoff or sequel prize.

Razzie voters also made worst-of-the-decade picks, with John Travolta's science-fiction debacle Battlefield Earth winning worst picture.

Paris Hilton was chosen as the decade's worst actress for movies such as The Hottie and the Nottie and Repo: The Genetic Opera.

Eddie Murphy was named the decade's worst actor for such bombs as The Adventures of Pluto Nash, I Spy and Meet Dave.