'The Hunger Games' Fans Are Getting Crazy Says Jennifer Lawrence On 'Late Show With David Letterman' (VIDEO)

"The Hunger Games" and the world of Panem isn't set to hit the big screen until this Friday, March 23, but the frenzy surrounding the property is building to record-setting pitch. Already, "The Hunger Games" has sold out nearly 2,000 showings and is on pace to compete with "The Twilight Saga" for the biggest advance-ticket sellers of all time. Estimates vary on how well it will open, but star Jennifer Lawrence is already seeing a fanatical level of enthusiasm from the fans, as she related on "Late Show" (Weeknights, 11:35 p.m. ET on CBS).

"We do these autograph signings and there's all sorts of different reactions," she said. "Some of them start screaming before they even make it to me and then run away."

She said the films and the books they're based on seem to be resonating mostly with young girls. But they are sometimes so overwhelmed when they meet her, that she sees those varied and sometimes downright wacky reactions. It's not unlike what happened to the cast of the Harry Potter films, the Twilight films and musical acts like Backstreet Boys, Spice Girls, New Kids on the Block and on back to The Beatles.

In this case, though, the frenzy is just starting. While the books have been out since 2008 and built a large and loyal fanbase, all of this buzz and excitement is before all of these fans have even had a chance to check out the film.

All those with tickets already and any who can find a screening not sold out will get their chance to check out Jennifer Lawrence in "The Hunger Games," opening nationwide on Friday, March 23. Meanwhile, David Letterman is on "Late Show" every night at 11:35 p.m. ET on CBS.

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