Ashton Kutcher -- who makes his first appearance on the season premiere of Two and a Half Men this Monday -- says he’s not trying to fill Charlie Sheen’s shoes.

Kutcher -- speaking Thursday to CBS’ Early Show co-anchor Chris Wragge -- also said: "I feel like the luckiest guy in the world.

"I just offhandedly mentioned to a friend (that), if they offer me that job, I'd take it," Kutcher said. "It's always sort of nice to jump on something that's already moving and successful and people already have an appetite for. It just seemed like the best job in the world".

A married couple and their relative cheated death after they were almost trampled by a marauding bison at scenic Yellowstone National Park,  and  RadarOnline.com  has the video of the terrifying incident.  

Cathy Hayes - a teacher from Utah - was videotaping the huge beast at the park in Wyoming while her husband Jeff and his brother Donald watched-on.