The fourth Tom Clancy novel to make it to the big screen, and the third actor to play Jack Ryan. This film falls short of expectations for several reasons. Since it is shot as a "prequel"of sorts to the previous films, Sum of all Fears seems somehow out of time with its predecessors. In this film, Jack Ryan is played by Ben Affleck, who is certainly no slouch in front of the camera. His portrayal of the the Clancy hero is good, and even meshes with the performance of Alec Baldwin in the first film of the series, Hunt for Red October. I guess my problem is Red October post dates Sum by a number of years, since in it Catherine and Jack are married with a daughter, yet the Soviets are still around. In Sum, Ryan and Cathy are still dating, only becoming engaged at the end of the film and the Soviet Union is long gone. From that standpoint alone, the timing is off sequence, which can make for a bit of a conflict for those of us who have read Clancy's novels, or seen the previous films. For the uninitiated, the film is terrific, and opens up the possibility of an entire new series (which was never pursued, apparently). Cromwell and Freeman are striking in their roles, as is Ciaran Hinds as the Russian President. The remaining cast, McGill, et. al., are intense when they need to be and absent when not needed. Which is the problem with a film like this, since you have so much action going on it is easy to get lost in it. Rated PG-13 for violence and language, the terrifying scene of a nuclear weapon going off in a crowded city is enough for all of us to consider whether or not to let the kids watch. Definitely not collectible, since the series was never continued and the film is out of sequence with the first three Clancy films. Rent it, don't buy it.