Exhibit 3

                             JOINT FILING AGREEMENT

      In accordance with Rule 13d-1(k)(1) under the Securities Exchange Act of
1934, as amended, each of the undersigned Reporting Persons hereby agrees to the
joint filing, along with all other such Reporting Persons, on behalf of each of
them of a statement on Schedule 13D (including amendments thereto) with respect
to the common stock, par value $0.001 per share of Riviera Holdings Corporation,
and that this Agreement be included as an Exhibit to such joint filing. This
Agreement may be executed in any number of counterparts, all of which taken
together shall constitute one and the same instrument.

      IN WITNESS WHEREOF, each of the undersigned hereby executes this Agreement
as of this 10th day of April, 2006.

                                D. E. SHAW LAMINAR PORTFOLIOS, L.L.C.
                                By:   D. E. SHAW & CO., L.L.C.,
                                      as managing member


                                      By:   /s/ Eric Wepsic
                                      -----------------------------------------
                                          Name:  Eric Wepsic
                                          Title:  Managing Director


                                D. E. SHAW & CO., L.P.


                                By:   /s/ Eric Wepsic
                                      -----------------------------------------
                                      Name:  Eric Wepsic
                                      Title:  Managing Director


                                D. E. SHAW & CO., L.L.C.


                                By:   /s/ Eric Wepsic
                                      -----------------------------------------
                                      Name:  Eric Wepsic
                                      Title:  Managing Director

                                D. E. SHAW VALENCE PORTFOLIOS, L.L.C.
                                By:   D. E. SHAW & CO., L.P.,
                                      as managing member


                                      By:   /s/ Eric Wepsic
                                          -------------------------------------
                                          Name:  Eric Wepsic
                                          Title:  Managing Director



                                  DAVID E. SHAW

                                By:   /s/ Eric Wepsic
                                      -----------------------------------------
                                      Name:  Eric Wepsic
                                      Title: Attorney-in-Fact for David E. Shaw