I've come to realize that I love bossa nova, but that I love Jobim most.
Favorites of mine are "Stone Flower" on CTI, "Matita Pere" aka "Jobim" and "Inedito."
I've also become a big fan of two singers who were part of Jobim's "familia" band, Paula Morelenbaum and Maucha Adnet, and recommend any of their albums.
Outside of Jobim I really enjoy Joao Gilberto, Nara Leoa, Eliane Elias and Baden Powell's bossa nova work, and the work of many others, many of whom I know others will begin to list post haste.