1 Catching NPR executive Ron Schiller bashing Tea Partiers as "seriously racist" people. Two people posed as representatives of a Muslim education charity and reportedly offered NPR a $5 million donation.

2 Getting ACORN to help "ladies of the night." O'Keefe first came to prominence in September 2009 with a sting operation on the Association of Community Organizations for Reform Now (ACORN). The young prankster and a colleague, dressed as a pimp and a prostitute, visited ACORN offices in several cities seeking advice on securing a housing loan. The damaging responses -- "honesty is not going to get you the house," one ACORN official was recorded saying -- led to the end of federal funding for the community organization, and it filed for bankruptcy the following year.

3 Trying to tamper with a Democratic senator's phone. O'Keefe was arrested in January 2010 and placed on probation after breaking into the New Orleans office of Sen. Mary Landrieu, D-La., in an apparent attempt to interfere with the building's phone lines.

4 Trying to humiliate CNN. Last September, CNN revealed O'Keefe plotted to embarrass a CNN correspondent by luring her onto a boat filled with "sexually explicit props" and filming her reaction.

5 Exposing teachers unions in New Jersey. O'Keefe returned at the end of 2010 with a secret video filmed in New Jersey that purported to show unionized teachers admitting how hard it was to fire a tenured teacher.

Source: TheWeek.com