Just to name a few (others on the board are much more in-the-know about script typefaces, so keep checking back for new posts):

Typefaces by Laura Worthington:
http://www.myfonts.com/fonts/laura-worthington/adorn/
http://www.myfonts.com/fonts/laura-worthington/hummingbird/

Champion Script Pro (a bit more formal):
http://www.myfonts.com/fonts/parachute/pf-champion-script-pro/

Memoir:
http://www.myfonts.com/fonts/stephen-rapp/memoir/

I relay Stephen Rapp's Memoir. His Hiatus or Montague looks interesting as well. Correspondence Ink Bellucia and Tart Workshop Nelly Script are very nice too.