The winners of the 2012 Grammy Awards have all been announced. In the rock world, it was all Foo Fighters all the time.

The Foos nabbed Grammys in every category in which they were nominated, except Album of the Year, which went to pop star Adele. During the pre-telecast ceremony, Dave Grohl & company walked away with Best Rock Album, Best Rock Song, Best Long Form Music Video and Best Hard Rock / Metal Performance.

Then, during the actual ceremony, Foo Fighters added a trophy for Best Rock Performance, giving them five Grammy Awards on the night.

In addition, the Foos performed their hit 'Walk,' then rocked their song 'Rope' in a tribute to dance and electronica music. And to cap it off, Dave Grohl took part in a Beatles medley with Paul McCartney, Bruce Springsteen and the Eagles' Joe Walsh.

See the winners and nominees in the rock categories below:

Best Hard Rock/Metal Performance

'White Limo,' Foo Fighters -- WINNER!
'On the Backs of Angels,' Dream Theater
'Curl of the Burl,' Mastodon
'Public Enemy No. 1,' Megadeth
'Blood in My Eyes,' Sum 41

Best Rock Song

'Walk,' Foo Fighters -- WINNER!
'The Cave,' Mumford & Sons
'Down by the Water,' The Decemberists
'Every Teardrop Is a Waterfall,' Coldplay
'Lotus Flower,' Radiohead

Best Rock Album

'Wasting Light,' Foo Fighters -- WINNER!
'Rock 'N' Roll Party Honoring Les Paul,' Jeff Beck
'Come Around Sundown,' Kings of Leon
'I'm With You,' Red Hot Chili Peppers
'The Whole Love,' Wilco

Best Long Form Music Video

'Foo Fighters: Back and Forth,' Foo Fighters -- WINNER!
'I Am World Tour,' Beyonce
'Talihina Sky: The Story of Kings of Leon,' Kings of Leon
'Beats, Rhymes & Life: The Travels of A Tribe Called Quest,' A Tribe Called Quest
'Nine Types Of Light,' TV on the Radio

Best Rock Performance

'Walk,' Foo Fighters -- WINNER!
'The Cave,' Mumford & Sons
'Down by the Water,' The Decemberists
'Every Teardrop Is a Waterfall,' Coldplay
'Lotus Flower,' Radiohead

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