Originally Posted by scipio
I've found that pull-ups have done much more for my biceps than any isolation work ever did. Compound movements involving them see to stimulate growth much more.
This works for me too. Granted, curls of this sort or that sort seem to get folks pumped-up a lot, but like the other posters mentioned, biceps are a small muscle.
I gained a lot more size by doing compound exercises like pull-ups too. These worked great for me to not only build the biceps and upper body.