Kanye West -- Imma Let You Finish Beck, But ...

Kanye West was really pumped up for Beck's big Grammy win Sunday night ... so much so, he almost relived his famous Taylor Swift moment from the 2009 Video Music Awards.

Beyonce lost the album of the year award to Beck, but before the singer could accept ... Kanye appeared out of nowhere to seemingly defend the diva's honor once again.

This time, things played out much differently.

And to prove things have changed ... Kanye even chatted at the show with T. Swift.