Ford is the only one who remembers what its like to act.
Hamill does some pretty good voice acting for cartoons. I was surprised.
That's not true.
Hammill played Christopher Blair in the Wing Commander [game] series (3 & 4 had movie cut-scenes, as well as Prophecy) -- additionally in the 90s show The Flash (DC Comic superhero) he played the Trikster, in which you could see the core of his next role: Joker on Batman the Animated Series. {While that isn't full-out acting, he did a superb job on the voice-acting.}
So he hasn't been utterly inactive.
I beg your pardon. "Corvette Summer" - maybe the single greatest film in history. It makes "Stage Coach" and "Battleship Potemkin" look like utter dreck in comparison. Only Hammill could have given such a once in a century performance.