ooh!ooh! i love this question!
edward: Raoul-"POTO", Sam-"Mamma Mia", Fiyero-"Wicked", Danny-"Greese", Roger-"Rent", Link-"Hairspray", Rolf-"Sound of Music", Sky Masterson-"Guys and Dolls", Conrad Birdie-"Bye Bye Birdie"
bella: Christine-"POTO", Donna-"Mamma Mia", Elphaba-"Wicked", Lisel-"Sound of Music", Sarah Brown-"Guys and Dolls"
emmett: Nathan Detroit-"Guys and Dolls", Riff-"West Side Story", Collins-"Rent", Firman-"POTO"
jasper: Boq-"Wicked", Nicely-Nicely Johnson-"Guys and Dolls", Andre-"POTO"
alice: Penny-"Hairspray", Nessarose-"Wicked", Meg-"POTO"
rosalie: Adelaide-"Guys and Dolls", Amber-"Hairspray", Maureen-"Rent", Carlotta-"POTO",
carlisle: Tevye-"Fiddler on the Roof", Captian VonTrapp-"Sound of Music", Oliver Warbucks-"Annie"
esme: Maria-"Sound of Music", Madame Giry-"POTO", Grace-"Annie"
hahaha... i'm a musical geek! but, it's all good.