Oprah Winfrey
The outgoing daytime queen greets 20,000 fans at Chicago's United Center.
Tom Hanks
"Today you are surrounded by nothing but love," the Oscar winner told Oprah.
Tom Cruise
The actor walked onstage to the Mission: Impossible theme.
Patti LaBelle
The soul singer joined Josh Groban for "Over the Rainbow."
Madonna
The Material Girl observed that Oprah is "still kicking ass."
Dakota Fanning
The teen was 9 the first time she appeared on The Oprah Winfrey Show.
Halle Berry, Katie Holmes & Queen Latifah
The admiring trio thanked Oprah for the strides she's taken for women everywhere.
Beyoncé
The diva rocked the house (twice, thanks to technical difficulties) with "Run the World (Girls)."
Diane Sawyer
The ABC News anchor announced that 25,000 oak trees were being planted in Oprah's honor.
Maria Shriver
Despite being in the middle of her own drama, the former first lady of California is a big enough Oprah fan to share in the lovefest.
Will Smith
The box-office star and wife Jada Pinkett Smith played hosts for the second half of the taping.
Jerry Seinfeld
The comedian obviously felt it was important to dress up for the occasion. Unlike Beyoncé, he wore pants.
Maya Angelou & Alicia Keys
The poet read a new work written specially for the occasion, while the Grammy winner accompanied her on piano.
Aretha Franklin
A healthy-looking Queen of Soul pays musical tribute to the Queen of Daytime.
Oprah & Friends
Next year's Oscars can only hope for this sort of star power.