Hollow Man

During filming, Kevin Bacon wore skin-tight costumes in green, blue, grey, or black, to assist with the adding of visual effects. Some of his cast mates said that the hardest part of the role was not laughing at someone painted in black, green, blue, or grey, pretending to be mean.

Bacon admitted that he accepted the role partly under the false assumption that he wouldn't need to be on set for scenes of Sebastian invisible, and that it would be an easy performance. He claimed that to the contrary it ended up being the most physically demanding and difficult role of his career.

(at around 49 mins) When the latex mask is being poured over Caine's face, it's smooth on top as if he were bald, instead of getting caught up in his hair.

The Director's Cut is ~7min longer than the Theatrical release, mostly incorporated deleted scenes previously available as home video bonus extras. The Director's Cut is Unrated.