LOL. Pretty much all of them. His earliest ones are the best, IMO. His later ones with other authors lost some of his brilliant inter-weaving of plots, IMO. I reallly like how he does his research on the technical detiails, and carries several very detailed and loosely-related plots at once in the same book.Any other great Tom Clancy novels you recommend?
I also respect very much how he has built relationships with military folks as background research for his books, and he is also careful not to divulge lots of military secrets in his work. He included some important misinformation in his book about how to build a terrorist version of a nuke in "The Sum of all Fears", for example.