Quotes from Batman for Lando are great, but I think quotes from Brian's Song might be even better. There could be a whole lot of attention to the fact that he's the only black man in the OT, and considering the theme of Brian's Song, you'd have a lot of lines to pull from.
Here is a small sample from IMDB:
http://www.imdb.com/title/tt0068315/trivia?tab=qt&ref_=tt_trv_qu
Another example, when he sees Han, "How you doin' you old pirate! So good to see you! How's your mother?"