No pressure, NPH.

Neil Patrick Harris, 41, chatted with Ellen DeGeneres, 57, on an episode of her show that aired Wednesday and revealed that he's pretty nervous about hosting the Academy Awards on Sunday - so nervous, that a "horrible dark cloud" looms over his head these days.

"Your selfie shot was the most spectacular, successful thing," said Harris. "How do you try to beat the selfie that broke the Internet? I see that in my nightmares."

How can we forget that spectacular selfie DeGeneres took last year as the host of the Oscars, that featured A-Listers like Bradley Cooper, Julia Roberts, Jennifer Lawrence and Meryl Streep?

Fortunately for Harris, DeGeneres offered him some advice for hosting this year's Awards.

"All you have to do is have a nugget of a good idea, and if everybody's onboard and they're playing, whatever your idea is they're with you," said DeGeneres.

She also chalked up last year's selfie to sheer good luck, and offered Harris some words of encouragement.

"You're such a good host," said DeGeneres. "It'll be great."