Noice one, very entertaining
Since I am very unfamiliar with Sonic Underground, the end totally threw me off, but it was random enough to enjoy anyway XD.
I'm beginning to appreciate how fast you can pump out these fun toons, and how good they are (and how they are still getting better IMO)!
I scanned through some of the reviews here and noticed some things about sound. I'd just thought I'd throw a little advice out help to ya... I think that my sound, and not to brag or anything, is very clear and good quality. So I was going to wonder what you use to record your sounds, because it makes all the difference; I use a $10 mic, but record with Sonic Foundry Sound Forge 6.0 and it sounds great. I was kinda suggesting you might try to get your hands on sound forge just to give it a try... maybe :)
I honestly think this was one of your better sounding movies, but I thought I'd try to help. Keep it up!
-Wronchi