I've watched this at least a dozen times, and I never get tired of it. This is my favorite piece of yours. The character is very simply designed, but his movements are very well animated and quirky, and his facial expressions are wonderful. The music is also fantastic and suits the animation pretty much perfectly.
I feel like I'm the rabbit whenever I have a lot of work to do, I just want to smash my computer and eat it, so this is pretty relevant to how I feel about work. The message at the end is exactly what I want to hear from people after I've done a lot of work, and the musical shift at that part is utterly perfect. Please don't stop making stuff like this.