With the release Tuesday of Batman: Arkham City, the highly anticipated sequel to the bestselling 2009 video game Arkham Asylum, Mark Hamill bid farewell to the Joker, a character he's been associated with for nearly two decades.

"Hello/Goodbye Joker!" the Star Wars actor wrote this morning on Twitter. "I've enjoyed every minute behind the wheel of the Crown Prince's crazy car -- I'm going to miss him more than I can say!!"

Hamill began voicing the Dark Knight's arch-nemesis in 1992 with Batman: The Animated Series, a role he continued in The New Batman Adventures and in episodes of Superman: The Animated Series, Justice League and Static Shock, as well as the animated movies Batman: Mask of the Phantasm and Batman Beyond: Return of the Joker.

Video games, toys, amusement park rides, even a flashback in the live-action Birds of Prey series -- The Dark Knight aside, virtually anywhere in the past 20 years you heard the voice of The Joker, that voice belonged to Hamill. But the actor, who was hesitant to return for Batman: Arkham City, revealed last year that the video game would feature his last turn as the Clown Prince of Crime.

"This will be my last, there's no question about that," he promised IGN.com in May 2010. "But it's the last hurrah."