If you've ever wondered what Neil Patrick Harris has to say about Uber CEO Travis Kalanick, today is your lucky day. On Wednesday, Time magazine released its annual list of the 100 Most Influential People, recognizing luminaries in five categories--Titans, Pioneers, Artists, Leaders, and Icons--and singing their praises in brief essays penned by other prominent people, as well as the magazine's writers.

Kalanick was just one of several entrepreneurs and business leaders who made Time's list. Here are a few of the highlights.

Travis Kalanick, CEO and founder of Uber

"You don’t realize how much you need something like Uber in your life until you start using it…. Its co-founder, Travis Kalanick, is super rad. He’s savvy and driven. I can’t wait to see what he’ll conjure up next, as I’m sure it’ll be something I’ve never known that I’ve always needed but truly can’t live without."--Neil Patrick Harris, actor

Jack Ma, CEO and co-founder of Chinese e-commerce site Alibaba

"Jack Ma is an icon of China's entry into the digital age. In 1999, the former English teacher and his co-founders launched Alibaba in an apartment in Hangzhou. Today, that startup has changed the way the Chinese shop."--Michael Schuman, Time business correspondent

Hosain Rahman, co-founder of Jawbone

"Most founders in Silicon Valley pay lip service to design. Rahman is one of few who has proved how powerful it really is."--Matt Vella, Time business and technology editor

Mary Barra, CEO of General Motors

"In a perfect world, gender shouldn't matter…Only time (and the pundits) will judge Barra and the kind of job she'll do for GM, its board of directors, its employees, the dealers and, most important, the people who buy its cars."--Lee Iacocca, former president of Ford and former CEO of Chrysler

Carl Icahn, businessman and investor

"Carl demands change in a corporate America more focused on maintaining the status quo. Carl brings ideas to the table. Creative, problem-solving ideas. And he backs them all up with major investments in the companies he gets involved with. More often than not, he's right."--T. Boone Pickens, investor

Tony Fadell, CEO of Nest Labs

Making stuff is hard. Making stuff that counts is rare. Making beautiful products, with a user experience that's intuitive for all, while rocking the world of business almost never happens … Tony did all this, at least twice."--Yves Béhar, founder of design agency Fuseproject

Evan Spiegel and Bobby Murphy, co-founders of Snapchat

"I was used to composing, saving, editing, and deciding how to share my pictures. Evan Spiegel and Bobby Murphy questioned that entire process and created something radical in its straightforwardness and speed: Take a snap of the moment and chose who receives it and how long they get to see it before it disappears forever."--Jack Dorsey, co-founder of Twitter and co-founder and CEO of Square

Jeff Bezos, CEO of Amazon