Another web reviewer I enjoy is Red Letter Media. http://redlettermedia.com/ This is usually a 2 person format and like Jahns they make use of the video format to produce entertaining reviews. They have a background in filmmaking so it gives them an informed perspective for their criticism (which like Jahns is frequently funny).
A print & web source for film reviews that I have long abandoned is Empire magazine. Too many times they have heaped praise on empty blockbusters only to turn around and recant their hyperbole when time came to review the same film on dvd release.