John Malkovich has ignited new health fears after his slurred, glassy-eyed appearance on Bill Maher's Club Random , with sources close to the actor telling RadarOnline.com it left fans and his loved ones alarmed by his "deeply out-of-character" behavior during the rambling conversation about his career.

The discussion, filmed in Los Angeles and posted online this week, showed the actor drifting through anecdotes while struggling to articulate words and appearing visibly unfocused. Article continues below advertisement

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Sources close to the production said crew members were surprised by the extent of his slurring.

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