I agree with many of the excellent suggestions people have named here, and I DON'T think that women have cornered the market on all the good roles, just because they've been wringing the drama out of them lately.
That may be a personal choice (or fantasy) of you individuals, but I'm VERY happy with the musical theatre characters that are the equivalent of "climbing the summit" for men.
I also disagree strongly with those of you who've said that some of these male roles aren't that demanding. I would argue that neither is Mama Rose, if an actress chooses to "walk through it." You just haven't seen it done WELL, yet.
My list would include:
Sweeney Todd
Georges Seurat
Billy Bigelow
John Adams
Tony Esposito
The King (and I)
Tevye
Max Bialystock
Guido Contini
Sky Masterson
Bobby
Franklin Shepherd
Jean Valjean
The Phantom
Pal Joey
Albin
Coalhouse Walker Jr.
Harold Hill
Henry Higgins
Jellyroll Morton
...and others I'm forgetting.
"Jaws is the Citizen Kane of movies."
blocked: logan2, Diamonds3, Hamilton22