That's pretty cool man.
The only improvements i can suggest is adding a pre-loader and making sure that all of the text is readable as some small fonts are harder to read. Also some of the recordings are not as good quality as the others which is why i marked you down slightly for sound, but overall good job mate.
Good quality soundboard
I don't know about Samurai Jack, but this soundboard is perfect for prank calls ! The sound is really clear, and the choices of sentences is fine. Some of them could really be used to prank somebody. The only problem is the lack of a "Stop all sounds" button - that's why I give you only 2 on interactivity.
Could use a few things
This was not a bad soundboard by any means, but it needs a few things. First off, the text needs to be bigger, I can't even read half of the buttons. There also needs to be a stop sounds button. Other than that you had a very good library of sounds that could be used for some good prank calls.
Good
My first impression was the text. Too small. some phrases sounded like on a wah-pedal. But the rest was good.
nice soundboard
just a good sound board