I've been a big Favreau fan since Swingers and his work on Friends. I really enjoy his show also. He's really turning out to be quite a good director. i've read nothing but positive things about Zathura so far. I had innitially written the film off as too similar in plot to Jumanji, but have been reading that Jon managed to get everything right that Jumanji got wrong, so now it's deffinitely on my list. I did read though that due to his recent commitment to direct John Carter of Mars that he will not be returning for Elf 2. That's a real shame. I think it was his direction as much as anything else which made Elf so great. Under someone else it could have just been a typical stupid comedy full of juvenile humor that only entertains some, but he made something really special.
I am very excited because Jon has signed on to direct the big screen adaptation of the John Carter of Mars film series originally to be directed by Robert Rodriquez and produced by the guy who started Ain't It Cool News. This film franchise if done well, could be the next Lord of the Rings type set of films.