Jack Black does not embarrass his children - yet.

The actor - who has sons Sammy, four, and two-year-old Thomas with wife Tanya Haden - is not afraid of doing outrageous things in his movies, including donning nappies and a dress for a scene in his new film 'Gulliver's Travels', but thinks his kids may eventually regret his antics.

Asked if he embarrasses his kids, Jack told BANG Showbiz: "Not yet, they are only two and four years old, they are not embarrassable yet. But, yeah. soon perhaps.

"They're pretty funny themselves though, we'll see who embarrasses who first."

Jack recently revealed he thinks the key to being a good father to his young sons is getting enough rest to be able to keep up with their energy levels.

Jack also revealed what he thinks makes him a good father - getting enough rest so he is able to keep up with his sons' energy levels.

He said: "The more sleep I get, the better dad I am. Parenting is 90 per cent energy; if you don't have it, then there tend to be some lazy TV-watching days with the kids and that ain't getting it done.

"A great day with them is an energized adventure into the world.

"My best piece of parenting advice? Never try to make a happy child happier. Just leave it alone. When you try and kick it up to another level with a scoop of ice cream or whatever, it ruins everything."