Fans of Neil Patrick Harris might be surprised to learn the actor suffered a slight case of nerves when performing his surprise musical number at the 2010 Academy Awards, he said on 'The Early Show' (weekdays, 7AM ET on CBS).

While the actor didn't panic while performing in front of the Hollywood elite, he did admit to having some anxiety during his unannounced song-and-dance number, which was a last-minute addition to the award show and required him to rehearse in secret. "I was a little bit nervous," Harris said. "When you're looking down and seeing George Clooney, it's a little freaky."

Watch the video after the jump.Fans of Neil Patrick Harris might be surprised to learn the actor suffered a slight case of nerves when performing his surprise musical number at the 2010 Academy Awards, he said on 'The Early Show' (weekdays, 7AM ET on CBS).

While the actor didn't panic while performing in front of the Hollywood elite, he did admit to having some anxiety during his unannounced song-and-dance number, which was a last-minute addition to the award show and required him to rehearse in secret. "I was a little bit nervous," Harris said. "When you're looking down and seeing George Clooney, it's a little freaky."