In a rare two parter last night Finn and Jake had to fight an evil lich. Unfortunately, the Ice King became a bother and the results was that Princess Bubblegum was hurt. By the end of the episode there was something of a major change as the character of Princess bubblegum was redesigned younger and a better match for Jake.
The jokes were funny and the animation just gets better, or at least I'm getting used to the weirdness. There was some real feeling between the characters. Also I thought the Ice King just rocked as he tried to be "nice" about kidnapping and marrying the Princess.
PS: The following "Regular Show," just had me laughing. It was all about favors, in this case known as "doing a solid," and the dangers of its abuse. I loved how favors were used to wreck a date, and I loved the interaction between the characters.