Article continues below advertisementEven George Clooney's award-winning acting skills couldn't help him pretend to feel well during the Venice Film Festival.On Thursday, August 28, Clooney held his throat while informing reporters, "I can't speak," as the sick movie star walked the red carpet with his wife, Amal Clooney, for the world premiere of his new film Jay Kelly.While he was able to emerge for a brief photo op, the 64-year-old was forced to miss various other press events in the canal-lined Italian city due to a "bad sinus infection.