"It's really ... weird to be famous," the 52-year-old actor tells Vanity Fair magazine in its June issue, on newsstands May 8. "It gets you into restaurants easier than other people, but beyond that, personally, you could set fame on fire."
Willis reprises his role as John McClane in the upcoming "Live Free or Die Hard," the fourth installment in the action series, which began in 1988.
"A lot of the physical stuff that they had me doing (for â€˜Live Free') was still, let's say, low-tech," he tells the magazine. "I don't bounce as well off the concrete floors as I used to. There are those â€˜ouch' moments that actually hurt."
"I'm glad I didn't wait a couple more years to do this."
Willis, who has three daughters from his marriage to Demi Moore, says he's not a popular subject in the press these days.
"They're not writing about guys my age much anymore, unless I do something naughty," he says. "They're writing about the kids. That's what drives the pop culture now."
As for his relationship with Moore, who married "That â€˜70s Show" actor Ashton Kutcher in 2005, Willis says: "It's hard to understand, but we go on holidays together. We still raise our kids together - we still have that bond."
"Demi is the mother of my children and Ashton is the stepfather of my children," he says. "I'm thrilled that Ashton turned out to be such a great guy. I love Demi, and I know she loves me."
"Live Free or Die Hard," from New Corp.'s 20th Century Fox, is set for release June 27.
KNOXVILLE - Country singer Deana Carter will headline the University of Tennessee's new Kickoff to Commencement celebration next week.
Carter, a UT alumna, will perform May 9 in the Humanities amphitheater, school officials announced Monday. Mixed with her songs, Carter also will talk about her memories of UT.
A university-wide commencement ceremony will not be held this year because of ongoing renovations in Thompson-Boling Arena. Individual colleges will hold their own ceremonies, and a committee of students and staff planned the kickoff event.
The Student Government Association asked the university to revive the tradition Aloha Oe, a candlelight ceremony for seniors that had been discontinued. It will be held before the concert.
Carter's 1996 debut album "Did I Shave My Legs for This?" went multiplatinum, and her breakthrough hit "Strawberry Wine" won CMA Song of the Year in 1997.
Carter was a rehabilitation therapist after graduating from UT before she quit to write songs in Nashville.
Commencement ceremonies will be held May 9-11 at different locations.