Reagan at the RNC 1984

Ronald Reagan addresses the Republican National Convention in 1984, where he accepts the nomination of his party to run for another term and lays out his party's platform. Reagan, deemed the "Great Communicator", was a charismatic leader who was able to convince the public to support the policies of his party and his administration.

Obama Signs Freedom of Press Act: Legislative Leader

Barack Obama signs Freedom of Press Act on May 17, 2010 which attempts to provide more protections to members of the press across the world by identifying countries where freedom of press is being violated. Also called the Daniel Pearl Act, as it has the support from the widow of Daniel Pearl, the American journalist murdered by Islamic terrorists in 2001. Obama has had strong legislative battles with Congress, but has also had tremendous success, notably the passage of health care last year.

President Obama and Prime Minister Cameron: Diplomacy at Work

A joint press conference between Barack Obama and newly elected British Prime Minister David Cameron last year. Obama seems to be effective in dealing with foreign leaders, especially Cameron, who seems(beside ideological differences) seems to have some similarities to.
Note: the video is 32 minutes long so don't be expected to watch the whole thing. It may also take a while to load. 

George H W Bush Announces War Against Iraq

On January 16, 1991 George H. W. Bush spoke to the nation, announcing the beginning air strikes against Iraq and the deployment of US and coalition troops to drive Saddam Hussein out of Kuwait. The war was a tremendous success, with US forces driving Iraqi troops out of Kuwait within a week and ultimately bolstering US pride which had been greatly scarred by Vietnam.

Heck of a job Brownie: Bush as a Crisis manager

A rather infamous moment that seemed to reflect the management of Hurricane Katrina by the Bush Administration. Bush was greatly criticized for mismanaging the government reaction to the crisis, partly because of factors that may have been beyond his control.

National Mourner: Reagan on the Challenger Disaster

This is Ronald Reagan addressing the nation on January 28, 1986 after the space shuttle Challenger exploded soon after takeoff, killing all the astronauts. This is one of most memorable speeches that Reagan ever gave, as he was able to briefly and simply comfort a shocked nation in the aftermath of the tragedy.