Most mooks are nameless and I just make up their combat stats by swag. If an NPC has a key skill check to make then I figure he/she has maxium ranks in it with as much as a +2 misc bonus to the check (this assumes I find it reasonable for the NPC to have the particular skill).
I don't waste much time fully stat'ing out NPC's unless they're going to be recurring a lot and their stat are important. For example, one of my players has a contact that is a Forger. This NPC will occassionally be talked to by the police so I have him stat'd out. But then I only allow my players a small number of real "contacts" they can depend on.
I also you an excel spread sheet to generate the basic values (BAB, Defense, Saves, and Skill points).