Russell T. Davies was so impressed by David Tennant's performance as Casanova that he cast him as the Tenth Doctor in Doctor Who (2005).
The miniseries premiered in the same year as the film Casanova (2005) in which Giacomo Casanova was played by Heath Ledger.
Laura Fraser who plays Henriette was in A Knight's Tale with Heath Ledger who also played the role of Casanova in the same year as David Tennant.