John Malkovich came to the rescue of an Ohio man who fell into a Toronto street and cut his neck on a scaffolding pole outside of his hotel on June 6, 2013, putting pressure on the gash with a towel until paramedics arrived. Here are some of the other celebrity turned real-life heroes.
Heidi Klum, along with bodyguard/boyfriend Martin Kirsten, reportedly raced to save her son Henry and two nannies when they were pulled into a rip current during a Hawaii beach vacation in March 2013. "Thankfully Henry is a strong swimmer and was able to swim back to land and we were able to get everyone out safely," Klum told CNN in a statement.
Just hours after Taye Diggs appeared at the 2013 Screen Actors Guild Awards, the actor tackled a burglar at his home, police said.
Academy Award winner Dustin Hoffman helped save the life of a jogger who suffered a heart attack April 27, 2012, in London's central Hyde Park.
"Grey's Anatomy" star Patrick Dempsey is the latest celebrity turned real-life hero, rescuing a teen trapped in a car wreck near his Malibu., Calif., home. Here are some other notable examples.
Ryan Gosling is a double hero, saving a woman in New York City from being hit by a taxi. He also broke up a street fight while walking in New York City in August 2011, even giving a street vendor $20 to solve the dispute over a $10 painting.
"Avatar's" Zoe Saldana came to the aid of a woman hurt in a car accident in January in the LA-area.
In 2004, tennis star Andy Roddick helped lead seven people to safety from a deadly fire at the Grand Hotel Parco dei Principi in Rome.
Arnold Schwarzenegger is perhaps the ultimate action hero on screen, and became one in real life when he saved a man from drowning at a California beach in 2004.
In August 2011, Brad Pitt rescued an extra from being trampled on the set of his upcoming movie "World War Z."
In 2007, "Jerry Maguire" star Cuba Gooding Jr. came to the aid of a shooting victim at a Hollywood restaurant, stemming the man's bleeding with towels until paramedics arrived.
On two different occasions, Demi Moore has used her high-profile Twitter account to help authorities locate people who had posted suicide messages on Twitter.
Country star Garth Brooks came to the aid of two Oklahoma boys home alone on school vacation, banging on their door to evacuate them from a dangerous grass fire heading their way in 2000.
In 2000, "Star Wars" legend Harrison Ford used his private helicopter to rescue a sick hiker in Wyoming. He didn't even complain when she threw up inside.
In January 2012, former 'N Sync member JC Chasez saved a 1-year-old girl from being hit by an umbrella on a Miami beach.
On the set of "Public Enemy" in 2008, Johnny Depp rushed in to push aside a group of extras who were in the path of an out-of-control car.
Kate Winslet rescued an elderly woman from the Virgin Islands estate of British billionaire Richard Branson when it caught fire in summer 2011.
In 1996, Mark Harmon rescued two teenagers from a burning car after it crashed near his home in Brentwood, Calif.
In 2001, Matthew McConaughey gave mouth-to-mouth resuscitation to a woman who had a seizure during a screening at the Toronto Film Festival.
In 2005, ex-Boston Red Sox player Nomar Garciaparra rescued two women who had fallen into Boston Harbor, pulling them to shore with his uncle.
While out for a walk with her personal trainer in 2004, Renee Zellweger rushed to the aid of a stricken hiker in California's remote Runyon Canyon.
Pop star Rihanna has used her Twitter account to help find donors for people who need bone marrow transplants.
In April 2011, "True Blood" star Ryan Kwanten helped drag a bloody, injured man from a Hollywood street and stayed until paramedics arrived.
In the aftermath of Hurricane Katrina in 2005, Sean Penn helped transport 40 people stranded in their flooded homes via motorboat. He also helped with relief efforts in earthquake-ravaged Haiti in 2011.
Atlanta-based rapper T.I. has had his share of legal troubles, but he was nothing but kind when he helped talk a suicidal man off a ledge in October 2010.
Tom Cruise has performed several heroic deeds, coming to the aid of a woman hit by a car in LA in 1996 (and paying her $7,000 bill when he found out she didn't have insurance), and saving two boys from being crushed against a fence at one of his premieres that same year.
In 2002, Tom Hanks rescued a man from drowning after hearing his screams during a jog on the beach in Malibu.
Vin Diesel plucked two children and the driver from a car driving in front of him that lost control and burst into flames on a California highway in 2002.