in no order

marlon brando-godfather
gary oldman-state of grace
pacino-scarface
tom sizemore-witness to the mob..tv
wood harris as avon-the wire
deniro-goodfellas
wesley snipes-new jack city
greg sierra as felix barbosa ---deep cover
pacino-donny brasco
pesci-goodfellas
"russian" mob boss-25th hour...one scene..few lines..but he stole the film
don cheadle-devil in a blue dress
larenz tate-menace 2 society
fred williamson- black ceasar