Plastic Man is the funniest character on the show, much thanks to Tom Kenny's voice talent. Another voice talent which stands out is Jeffrey Combs, mr. Herbert West who previously voiced the Question in Justice League does the nigh-impossible. Just by his voice, and the power of the writer, Kite-Man becomes a genuine threat and a great villain, and actually quite sinister towards the end. Rubberneck may look a lot like Clayface, but he is a good villain too in his own right.
This episode has an impressive and perfectly balanced ratio of comedy and action, including the opening. We get to see more from Plastic Man's life, his hot wife Ramona, his baby and his sidekick Woozy Winks. The action in the end when everybody seems to get Plastic Man's stretching powers is fantastic, and could be my favorite action scene from this show, it's really creative and the animation is superb. The final gag is hilarious.
"Long Arm of the Law" is one of my favorite episodes from the show, it's funny and exciting and an excellent example of why this show is so fantastic.