President Obama and Afghan President Hamid Karzai greet each other during a May 20 meeting at the NATO Summit in Chicago. Karzai is in Washington, D.C., this week to meet Obama and other senior U.S. officials. Pablo Martinez Monsivais/AP hide caption

Shea Catlin, a nurse practitioner, doses out flu vaccine to give a shot at a CVS Minute Clinic in Arlington, Va., on Jan. 3. Barbara L. Salisbury/The Washington Times/Landov hide caption

Jake Scott (a.k.a. 2 Pi), with student. Courtesy of Jake Scott hide caption

A supporter of Venezuela's President Hugo Chavez holds a heart-shaped sign that reads in Spanish "I vote for Chavez!" and a picture of Chavez outside the National Assembly in Caracas over the weekend. On Thursday, Chavez is scheduled to be sworn in for a fourth term. Government officials are suggesting the ceremony could be delayed as the president recovers from cancer surgery in Cuba. Ariana Cubillos/AP hide caption

Liza Colon-Zayas plays a troubled character named Odessa Ortiz, who finds her better self online. She's pictured above with Bill Heck, as Fountainhead. Richard Termine/ hide caption