Whispers of infidelity trailed Michael Douglas, even though his first marriage lasted more than 20 years. At 56, he married a 31-year-old Catherine Zeta-Jones. They now have two children together and will celebrate their fifth anniversary in November.
Interestingly, though many people express shock over the couple's age difference, Douglas' next leading lady will be even younger than his wife. He is set to star with 31-year-old Bollywood superstar Aishwarya Rai in "Racing the Monsoon," due out next year.
8. Rod Stewart and Rachel Hunter (25 Years)
How long can you reasonably expect to stay married to a man whose mantra is "Forever Young"?
Earlier this month, Rod Stewart announced that Penny Lancaster, his 34-year-old fiancée, is pregnant with the 60-year-old's seventh child.
The Grammy-winning singer only forgot one thing -- he isn't yet divorced from his last wife, Rachel Hunter, the 35-year-old mother to two of his children. The couple separated in 1999, but the divorce proceedings were subsequently dropped.
It's amazing how time flies for rock stars. In 1967, a 25-year-old Paul McCartney was singing, "Will you still need me, will you still feed me, when I'm 64?"
These days, the 63-year-old Sir Paul and his 37-year-old wife are caring for their 1-year-old daughter.
9: Liz Taylor and Larry Fortensky (20 Years)
All you really need to know about Elizabeth Taylor's eighth marriage is that it took place in 1991 at Michael Jackson's Neverland ranch, with the "King of Pop" serving as best man.
Taylor was 59 when she met her groom, 39-year-old construction worker Larry Fortensky, when they were in rehab together at the Betty Ford Clinic.
Fortensky hadn't been born when an 18-year-old Taylor married her first husband, hotel heir Conrad Hilton Jr. While that marriage lasted only 205 days, Fortensky managed to make it five years with Liz, which is more than Eddie Fisher and some of her other husbands can say.
Taylor has always been criticized as a serial bride. But after her ill-fated romance with Fortensky, she's managed to keep one vow -- promising never to marry again.
Buck Wolf is entertainment producer at ABCNEWS.com. "The Wolf Files" is published Tuesdays.