Research Paper is such a broad topic--it could be expository, persuasive, etc. Some ideas . . .
The history and future of Disney on Broadway
The work of Stephen Sondheim (expository)
The work of Frank Loesser
The work of Loerner and Lowe
The work of Jason Robert Brown (catch a trend here?)
The success of film adaptations on Broadway
The career of Ethel Merman (again, pick any big star here--Mary Martin, Bernadette Peters, Kristin Chenoweth)
Broadway 1998 vs 2008 (a big change)
Broadway Mouth: Autographed Luba Mason Krazy Love CD Giveaway