LOL - Needs some better acting though.
CURRAAAZZZIER than usual. HIlarious writing man. Although, he really didn't necessarily sound anything like the joker. I always have enjoyed your writing, and laugh at many of your simple voice acting skits. The only thing I recommend working on is the acting, perhaps adding a little crazy laughter in there in order to get attached to the character. When voice acting, I always try to make it to where I actually do feel like the character does. For example, if the character is angry I start to get FURIOUS. If he is crazy I start to laugh maniacally. If he is being punched I punch myself in the stomach (lol)
So yeah, work on your acting but your writing is great!