Originally Posted by bamazav
A question to build on the answers above.
Is there a time to do specialized work for the biceps? If so, what beside endless curls should one do?
I believe yes there is. And there is a variety of person specific---examples.
For example: Lets say hypothetically, there is a BBer that has gained good overall body size, and has good arm size, but the contraction of the bicep appears flat, elongated. One could for a time, include such direct exercises to provide more contraction at the peak of the movement to try to bring in more height (genetics willing).