I think I may be going around this the wrong way, but I thought I'd check with you on how this could be done.
On my home page, I want to show the latest 3 posts from different taxonomies, with the featured image and excerpt. I've not started on the number yet, but what I ahve below is placed onto the page I've created to be my home page, using the shortcodes given by CustomPress:
Latest Book Reviews
[tax id="book_reviews" before="your text before " separator=", " after=" your text after"]
Latest Film Reviews
[tax id="film_reviews" before="your text before: " separator=", " after=" your text after"]