The crucible of America's presidency has forged some of the very best and very worst leaders in our national history, along with many in between. From Abraham Lincoln's political savvy and rhetorical gifts to James Buchanan's indecisiveness, "The Presidents" teaches much about what makes a great leader--and what does not. What lessons can we learn from America's past presidents? Can these lessons help us choose the next one wisely? C-SPAN founder Brian Lamb shares his answers in this timely talk.