Since the year 2000, Argentina has had four presidents. Here is a detailed list of the presidents, their terms, and some key events during their tenure:

1. Fernando de la Rúa (1999-2001):
Fernando de la Rúa was elected as the president of Argentina in 1999 and served from December 10, 1999, until his resignation on December 20, 2001. His presidency was marked by a severe economic crisis, which led to widespread social unrest and protests. The crisis ultimately culminated in the December 2001 riots, known as the "Argentinazo," where thousands took to the streets demanding economic reforms. De la Rúa's inability to effectively manage the crisis and his government's harsh austerity measures resulted in his resignation.

2. Eduardo Duhalde (2002-2003):
Following De la Rúa's resignation, Eduardo Duhalde, the vice president at the time, assumed the presidency on December 20, 2001. Duhalde's main focus was to stabilize the economy and restore confidence in the country. He implemented various measures, including the devaluation of the currency, the peso, and the introduction of a dual exchange rate system. Duhalde's presidency also saw the implementation of social programs to alleviate the effects of the economic crisis on the most vulnerable sectors of society. He served as the president until May 25, 2003, when the next elected president took office.

3. Néstor Kirchner (2003-2007):
Néstor Kirchner was elected as the president of Argentina in 2003 and served from May 25, 2003, until December 10, 2007. His presidency was characterized by a focus on human rights, social justice, and economic recovery. Kirchner implemented policies to address the consequences of the economic crisis, such as debt restructuring and increased public spending. He also prioritized the prosecution of human rights abuses committed during the military dictatorship of 1976-1983, leading to the trial and conviction of several high-ranking military officials. Kirchner's presidency marked a shift towards a more progressive and inclusive agenda in Argentina.

4. Cristina Fernández de Kirchner (2007-2015):
Cristina Fernández de Kirchner, the wife of Néstor Kirchner, was elected as the president of Argentina in 2007 and served from December 10, 2007, until December 10, 2015. Her presidency continued the policies initiated by her late husband, focusing on social welfare programs, industrial development, and increased state intervention in the economy. However, her government faced criticism for its handling of inflation, restrictions on media freedom, and allegations of corruption. Despite these challenges, Fernández de Kirchner remained a popular figure among certain sectors of society.

These are the presidents of Argentina since 2000. It is worth noting that this answer provides a brief summary of their presidencies, and there are many more details and events that could be explored. For a more comprehensive understanding, it is recommended to refer to reputable sources and further research each president's tenure.