Jimmy Fallon just hijacked Stephen Colbert's Emmy awards acceptance speech -- and it was either the first shot in a new late night war ... or a totally planned bit.
Colbert's crew won for 'Outstanding Writing in a Variety Series' ... and after Gwen Stefani butchered Colbert's name, Fallon ran up on stage trying to deliver his own acceptance speech.
Colbert's reaction is pretty funny -- especially considering he's taking over for David Letterman on CBS when he retires ... and he'll be battling Fallon for ratings.
Of course it might have all been scripted.
Kanyes Colbert's Emmy Speech
8/25/2014 7:15 PM PDT BY TMZ STAFF
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