Needs work, but not bad.
I'm just gonna go scene-by-scene here.
1) I don't even know what this is. I do think you overdid the judge's head movements a lot, though, so maybe understate that a bit.
2) Excellent use of April May (and doubly so of the guy in the visor), but I think her expression at the end doesn't match her words. She didn't sound angry, but rather more teasing-like.
3) Funny, but the character warping was kinda weird.
4) I like the joke behind this bit, and I do get it, but I think a little more explanation in the scene would help. Maybe splice in some words from a scene where a lawyer's losing a case (Liar Liar's a good one, and there's examples on Newgrounds of this already).
5) Hilarious scene, any changes would be immaterial.
6) Love the mouth sync here. von Karma at the end of it didn't quite match, but otherwise perfect.
7) I think you could've cut this scene out completely.
8) Love it, love it, love it.
9) Ditto. Maybe not have Gumshoe rise up into the scene but transition to him instead.
10) Rawk. Perfect.
11) It's a little...weird that Pearl was used for this scene, but I have to admit her expression is priceless.
12) The scene itself is funnier than the character doing it. Try to find a way to make the character enhance the scene rather than just perform it. Using someone else, like the old man or maybe even Phoenix himself in this case, would've been even funnier.
13) I like seeing someone use the classics, but I don't quite get the joke either.
Overall, needs improvement, but a good start.