Some context: Dreamgirls is a 2006 American romantic musical drama film written and directed by Bill Condon and jointly produced and released by DreamWorks Pictures and Paramount Pictures. Adapted from the 1981 Broadway musical of the same name by composer Henry Krieger and lyricist/librettist Tom Eyen, Dreamgirls is a film a clef, a work of fiction taking strong inspiration from the history of the Motown record label and one of its acts, The Supremes. The story follows the history and evolution of American R&B music during the 1960s and 1970s through the eyes of a Detroit, Michigan girl group known as the Dreams and their manipulative record executive. The film adaptation of Dreamgirls stars Jamie Foxx, Beyonce, Eddie Murphy, and Jennifer Hudson, and also features Danny Glover, Anika Noni Rose and Keith Robinson.
Dreamgirls premiered on December 4, 2006 at the Ziegfeld Theatre in New York City, where it received a standing ovation. The film's Los Angeles premiere was held on December 11 at the Wilshire Theater in Beverly Hills.  Similar to the releases of older Hollywood musicals such as The Sound of Music, My Fair Lady, and West Side Story, Dreamgirls debuted with three special ten-day roadshow engagements beginning on December 15, 2006 at the Ziegfeld Theatre in New York City, the Cinerama Dome in Los Angeles, and the AMC Metreon 15 in San Francisco. Tickets for the reserved seats were $25 each; the premium price included a forty-eight page full-color program and a limited-print lithograph. This release made Dreamgirls the first American feature film to have a roadshow release since Man of La Mancha in 1972. Dreamgirls earned a total of $851,664 from the roadshow engagements, playing to sold-out houses on the weekends. The film's national release, at regular prices, began on December 25. Outside of the U.S., Dreamgirls opened in Australia on January 18, and in the United Kingdom on February 2. Releases in other countries began on various dates between January and early March. Dreamgirls eventually grossed $103 million in North America, and almost $155 million worldwide.  DreamWorks Home Entertainment released Dreamgirls to home video on May 1, 2007 in DVD, HD DVD, and Blu-ray formats. The DVD version was issued in two editions: a one-disc standard version and a two-disc "Showstopper Edition". The two-disc version also included a feature-length production documentary, production featurettes, screen tests, animatics, and other previsualization materials and artwork. Both DVD versions featured alternate and extended versions of the musical numbers from the film as extras, including the "Effie, Sing My Song" scene deleted during previews. Both the Blu-ray and HD DVD versions were issued in two-disc formats. Dreamgirls was the first DreamWorks film to be issued in a high definition home entertainment format. As of 2017, total domestic video sales to date are at $95.1 million.  A "Director's Extended Edition" of Dreamgirls was released on Blu-Ray and Digital HD on October 10, 2017 by Paramount Home Media Distribution. This version, based on edits done for preview screenings before the film's release, runs ten minutes longer than the theatrical version and features longer musical numbers (including songs and verses cut during previews) and additional scenes.
Were these the only roadshow engagements?
A: the Cinerama Dome in Los Angeles, and the AMC Metreon 15 in San Francisco.
Some context: Caesar was the youngest of three sons born to Jewish immigrants living in Yonkers, New York. His father was Max Ziser (1874-1946) and his mother was Ida (nee Raphael) (1887-1975). They likely were from Dabrowa Tarnowska, Poland. Reports state that the surname "Caesar" was given to Max, as a child, by an immigration official at Ellis Island.
Caesar's television career began with an appearance on Milton Berle's Texaco Star Theater in the fall of 1948. In early 1949, Caesar and Liebman met with Pat Weaver, vice president of television at NBC, which led to Caesar's first series, Admiral Broadway Revue with Imogene Coca. The Friday show was simultaneously broadcast on NBC and the DuMont network, and was an immediate success. However, its sponsor, Admiral, an appliance company, could not keep up with the demand for its new television sets, so the show was cancelled after 26 weeks--ironically, on account of its runaway success.  On February 25, 1950, Caesar appeared in the first episode of Your Show of Shows, initially the second half of the two-hour umbrella show, Saturday Night Review; at the end of the 1950-51 season, Your Show of Shows became its own, 90-minute program from the Interntional Theatre at 5 Columbus Circle and later The Center Theatre at Sixth Avenue and 49th Street.  Burgess Meredith hosted the first two shows, and the premiere featured musical guests Gertrude Lawrence, Lily Pons and Robert Merrill. The show was a mix of sketch comedy, movie and television satires, Caesar's monologues, musical guests, and large production numbers. Guests included: Jackie Cooper, Robert Preston, Rex Harrison, Eddie Albert, Michael Redgrave, Basil Rathbone, Charlton Heston, Geraldine Page, Douglas Fairbanks Jr., Pearl Bailey, Fred Allen, Benny Goodman, Lena Horne and many other stars of the time. It was also responsible for bringing together the comedy team of Caesar, Coca, Carl Reiner, and Howard Morris. Many writers also got their break creating the show's sketches, including Lucille Kallen, Mel Brooks, Neil Simon, Michael Stewart, Mel Tolkin and Sheldon Keller. Sid Caesar won his first Emmy in 1952. In 1951 and 1952, he was voted the United States' Best Comedian in Motion Picture Daily's TV poll. The show ended after almost 160 episodes on June 5, 1954.  A few months later, Caesar returned with Caesar's Hour, a one-hour sketch/variety show with Morris, Reiner, Bea Arthur and other members of his former crew. Nanette Fabray replaced Coca, who had left to star in her own short-lived series. Ultimate creative and technical control was now in Caesar's hands, originating from the Century Theater and the weekly budget doubled to $125,000. The premiere on September 27, 1954, featured Gina Lollobrigida. Everything was performed live, including the commercials.  Caesar's Hour was followed by ABC's short-lived Sid Caesar Invites You from January 26 to May 25, 1958. It briefly reunited Caesar, Coca, and Reiner, with Simon and Brooks among the writers.  In 1963, Caesar appeared on television, on stage, and in the movies. Several As Caesar Sees It specials evolved into the 1963-64 Sid Caesar Show (which alternated with Edie Adams in Here's Edie). He starred with Virginia Martin in the Broadway musical Little Me, with book by Simon, choreography by Bob Fosse, and music by Cy Coleman. Playing eight parts with 32 costume changes, he was nominated in 1963 for a Tony Award for Best Leading Actor in a Musical. On film, Caesar and Adams played a husband and wife drawn into a mad race to find buried loot in the 1963 comedy extravaganza It's a Mad, Mad, Mad, Mad World.
Where else was the show filmed
A:
later The Center Theatre at Sixth Avenue and 49th Street.  Burgess Meredith hosted the first two shows,