The fact that it is a prairie dog and not a chipmunk does not diminish the laughability factor. The video clip was taken from a Japanese television show, which can be seen here if you care to look.
In any case, as you can imagine, "Dramatic Chipmunk" started a whole mess of kooky spin-offs. Here are some of the best ones I could find.
Is it an Evil Chipmunk?
Illegal File Sharing Dramatic Chipmunk
And of course, I always save the best one for last...
Internet Porn Dramatic Chipmunk (SFW)