These famous stars appeared on the show, in order of appearance:

Tamara & Tia Mowry, Christopher Reid (of Kid 'N Play), Wesley Jonathan, John O'Hurley, Richard Gant, Earl Billings, Rolanda Watts, and Destiny's Child (original lineup).

also the person who plays Raina on the division guest starred in an episode and Kyla Pratt

I loved Kyla Pratt's character! :) She and TJ were fun together.