The 58-year-old 'America's Got Talent' panelist said that the 30-year-old pop star's appearance will be gripping viewing because of her level of intelligence.
The outspoken longtime radio presenter said: ''I think it's a wonderful decision. Britney still thinks the earth is flat.''
Speaking at a press conference at New York's Friars Club on Thursday, Howard joked that Britney - who is a mother of two children - may not be able to function at her new job where she will replace either Paula Abdul or singer Nicole Scherzinger.
He said: ''I can't imagine... I think we're going to tune in to see her, to see if she can function through the thing.
The controversial talent show judge added: ''As far as any real criticism, I think Simon[Cowell] and La Reid will do that. As far as criticism, I think Britney will sit there and eat a lollipop and wear a sexy outfit... I'll tune in to see what kind of train wreck she is, absolutely.''