January 20, 2011 (10 images)

House Minority Leader Nancy Pelosi, D-CA, speaks during a ceremony marking the 50th anniversary of President John F. Kennedy's inauguration on Capitol Hill in Washington on January 20, 2011. UPI/Roger L. Wollenberg

Vice President Joe Biden and Senate Majority Leader Harry Reid, D-NV, attend a ceremony marking the 50th anniversary of President John F. Kennedy's inauguration on Capitol Hill in Washington on January 20, 2011. UPI/Roger L. Wollenberg

Caroline Kennedy speaks as Vice President Joe Biden and Senate Majority Leader Harry Reid, D-NV, look on during a ceremony marking the 50th anniversary of President John F. Kennedy's inauguration on Capitol Hill in Washington on January 20, 2011. UPI/Roger L. Wollenberg

Actor Seth Rogen attends the Japan premiere for the film "Green hornet" in Tokyo, Japan, on January 20, 2011. UPI/Keizo Mori