My two cents is that it is an good parade, but definetely my least favorite of the parades.
I, however, am one who find it difficult to do everything in Animal Kingdom in a single day (at least by its early closing time). I like to enjoy the park's details. Therefore, the Jammin Jungle parade is a good end to the day in the park. After watching the parade, we usually head over to do Kali River Rapids or the Maharaja Jungle Trek. If you've felt like you've already done "everything", then skip the parade and head over to another park for the evening.