Allison Janney casually demonstrates Meryl Streep's kissing technique on Graham Norton

When movie stars lock lips onscreen it may look natural, but there's actually a lot of work that goes on behind the scenes.

Mints. The no tongue rule. Strange anti-bacterial lip gloss stuff. The whole thing is a minefield.

Some actresses, like Meryl Streep, even have special techniques for making the kiss as photogenic as possible.

In the clip above, Allison Janney — who had to kiss Streep in The Hours— demonstrates the method flawlessly. And she uses a mildly stunned Graham Norton as her subject. Read more...