She's married to Ted Danson, was discovered by Jack Nicholson, and now Oscar-winner Mary Steenburgen is spending *Four Christmases* with Vince Vaughn and Reese Witherspoon! The self-proclaimed laugh junkie is on a roll as she prepares for the new season of *Curb Your Enthusiasm* and *Step Brothers* with Will Ferrell is released on DVD. "I'm notoriously a giggler," says Mary, who describes her sense of humor as being on par with a 12-year-old boy. "I've ruined so many takes in my career it's pathetic!" The Hollywood star is also out with a line of soy candles, Nell's Compass, which she developed to benefit the anti-poverty group Heifer International. "I knew that this year was going to be hard for some of the wonderful organizations just because the economy is struggling," she explains. "I love that," says Rachael, "and I'm also going to give a shameless plug for my own organization!"[ Click here for information about Rachael's new Yum-o! holiday cards. ](/show/segments/view/rachs-yum-o-holiday-cards/)