ABC News February 23, 2015

Oscars 2015: How Stephen Hawking Reacted to Eddie Redmayne's Win for Best Actor

WATCH: Eddie Redmayne: Oscar Win 'Doesn't Feel Real'

Eddie Redmayne wasn't the only one extremely excited when his name was called for Best Actor at the 2015 Oscars on Sunday night.

Redmayne, 33, played the iconic Stephen Hawking in "The Theory of Everything" and his portrayal of the genius dealing with ALS in the film even grabbed the attention of guess who -- Hawking, 73, himself.

Hawking took to Facebook and commented on Redmayne's big win.

Read: Oscars 2015: Top 5 Moments From the Show

"Congratulations to Eddie Redmayne for winning an ?#?Oscar? for playing me in The Theory of Everything Movie," he wrote. "Well done Eddie, I'm very proud of you."

He signed the message "SH."

Kirsty Wigglesworth/AP Photo
Professor Stephen Hawking during a press conference in London, Dec. 2, 2014. Professor Hawking and Intel discussed the latest developments on how technology enhancements are going to have a wider impact on those, like Professor Hawking that suffer from Amyotrophic lateral sclerosis (ALS).

Redmayne won the big award -- and his reaction was priceless. He even interrupted his speech to pump his fist in excitement and yell "Wow!"

After the show, Redmayne told reporters backstage that he does plan to go and see Hawking and his family to celebrate after his epic win.