Where do I start with Duke?

Never No Lament
Life At Newport 1955

be against race mixing

get a robe

Piano in the Background for a range of great works by dukes full band

Money Jungle shows off his small group playing (w Charles Mingus and Max Roach)

Nutcracker suite and and peer gynt suite are great his "covers" (rearrangements of classic works)

Duke Ellington and John Coltrane -- amazing album if like coltrane

Afro eurasian eclipse, afro-bossa, and far east suite for the adventurous almost avant garde duke ellington

also listen to classic songs from dukes orchestra
black and tan fantasy
caravan
mood indigo
sophisticated lady
creole love call
the mooche
it don't mean a thing
take the a train
perdido
satin doll

And the list goes on, Duke is easily the greatest jazz composer who ever lived. Give his stuff a shot it's hard not to like it.