Our favorite TV sidekicks

Valerie Harper stopped by "<a href='http://piersmorgan.blogs.cnn.com/'>Piers Morgan Live</a>" on Tuesday in a prime-time exclusive. The actress, who played Mary Richards' best friend, Rhoda Morgenstern, on "The Mary Tyler Moore Show," recently revealed to <a href='http://www.people.com/people/article/0,,20679402,00.html' target='_blank'>People</a> magazine that she has terminal brain cancer. The following is a celebration of some of TV's other most beloved sidekicks:

Valerie Harper stopped by "Piers Morgan Live" on Tuesday in a prime-time exclusive. The actress, who played Mary Richards' best friend, Rhoda Morgenstern, on "The Mary Tyler Moore Show," recently revealed to People magazine that she has terminal brain cancer. The following is a celebration of some of TV's other most beloved sidekicks: