Here's the contents of the blog entry about the interview:
This morning, to Hensons for a bunch of interviews, then Lev Grossman of Time interviewed me and Joss Whedon together (Joss on the phone) which seemed like it wouldn't work, but was actually most pleasant and fun. (My favourite bit was, in an aside, learning that Joss liked The Day I Swapped My Dad For Two Goldfish.)
Sounds like it will be a fun interview and interesting read, not to mention major coverage, since you can't get more mainstream than Time magazine. I'm guessing the article will be on Serenity and MirrorMask since they both have the same release date.