In the big screen comedy, Ferrell plays a singer who uses the money he earns from his one hit song to buy and coach a struggling American Basketball Association team.
Asked what was harder for him to get right -- the singing or the basketball playing -- Ferrell told reporters in New York Tuesday, "It definitely wasn't basketball.
"I'm a pretty gifted athlete. ... I always wanted to do a basketball movie, so this was a dream come true. I've played a lot of basketball, but I've never been a 1970s pop singer before, so that was brand new for me to do. I actually went to a funk camp conducted by Isaac Hayes," he quipped. "It was up in Vermont. You never get to see Isaac Hayes, though. He's in another room. You just hear his voice."
So, does Ferrell have any advice for the New York Knicks?
"My advice is: 'Let's just save money and stop the season right now. Take the rest of the year off, maybe do some journaling,'" he said.
Exploding whale video goes viral on Internet
Caroline Berg Eriksen: Soccer player's wife triggers debate with post-birth selfie