glad your son has such interest in holmes...and so nice it's a pursuit you can share.
has he read much of the conan doyle 'canon?' to me, being grounded in the written holmes enriches the experience of the film/tv experience all the more. conan doyle was quite a writer, and sherlock an immensely complex character. bringing his sherlock to the screen and tv (and radio) must be quite a challenge. and trying to put a fresh face to it, ala the new pbs series, is to be commended.
but having done so, it's difficult not to compare the pbs series to all which preceded it? in my old farty view, it just doesn't cut it as sherlock...tho it may have other elements to commend it.
i'm sure there are contrary views to share on this one. let's hear em!!