Profile for kevlowell

My friends and I bantered about this the other night: In your opinion, which songwriting duo (composer, lyricist) or songwriter's (composer/lyricist) songs from 20th-century musicals have held up best?

Songwriting duo:

Rodgers & Hart - I think they've held up the best out of any musical theatre songwriters. My Funny Valentine, The Lady is a Tramp, Bewitched, Where or When, Mountain Greenery, Falling in Love With Love, This Can't Be Love, I Could Write a Book, Man

In your opinion, what are the most thankless roles in musical theatre? By that I mean which roles that no matter who plays them, they (rarely) never win Tonys or the role is upstaged by that of the other lead? Here's my short list:

MY FAIR LADY: Eliza. Higgins & Alfred always get the spotlight while she does the heavy lifting.

WEST SIDE STORY: Tony & Maria. 

PIPPIN: Pippin. It's always about the Leading Player. Always.

DREAMGIRLS: Lorrell.