Yeah, the game and the comic's are brilliant.
And if the next game is anything like the teaser it will be brilliant too!
As for the episodes the only one's I think are really funny are little bigfoot, bad day on the moon and the visitors.
The first too are actually directed by Steve Purcell himself : )
As for the voices, I think the ones in the games are so much better, they just have more Sam and Max appeal.