sp33dg33k,
Circuit training may aid you in burning off a little extra body fat but you will do good to fininsh each excersice first before moving on to the next. (Assuming that you are pushing for bulk here) The reason being is that you need to work each muscle to the point of exhaustion for that particular lift and angle before moving on to somthing new. I have known people how in the past that have trainined like this and few ever made any quality gains. Now you can tone up siginificantly but for size and strentgh I would stick to what I mentioned above.
Tobey
Tobey