Film historian Annette Lloyd gives a lively show about Harold Lloyd on The Definitive Cinematic Retrospective. I was out of town for the live show, but the download is over 70 minutes.
If you are interested in Harold Lloyd and silent films in general, you will enjoy Annette's very informative talk on Lloyd. The show is hosted by Cohen Phillips. You can find the program at this link under archived segments: show #14 - May 18, 2007.
Also check out Annette's site on Harold Lloyd. Definitive is live Thursday evenings 11PM eastern on BlogTalkRadio.