Giancarlo Esposito:
A homeless man picking up Flipper's belongings while his wife throws them out of the window. This cameo role also serves as another reference to 'Do the Right Thing (1989)' as the homeless man is in fact the very same Buggin' Out character that protested Sal's lack of African-Americans on his wall of fame.
During a scuffle in Paulie's store, a man can be seen reading a newspaper with a front headline that reads "Doin' The Right Thing." Most likely this is a reference to one of Spike Lee's earlier films, Do the Right Thing (1989).