My rankings for the rides from best to worst--
Kilimanjaro Safaris (9-- depend on how many animals you see, but it's usually great)
Dinosaur (8-- wild and jerky, but fun)
Primeval Whirl (7-- OK, but too painful)
Kali River Rapids (7-- not that exciting, just WET)
Triceratops Spin (5-- OK, a kiddie ride)
Haven't ridden Everest yet, but I will in a couple of weeks.
As for shows-
Festival of the Lion King (10-- best live show at WDW IMO)
Jammin' Jungle Parade (9-- second favorite parade after Spectromagic)
Flights of Wonder (8-- most underrated show at WDW)
It's Tough to Be a Bug (7-- probably my least favorite 3d show, but still worth seeing))
Pocahontas (haven't seen it)
Also, the Pangani Forest Exploration Trail and the Maharaja Jungle Trek are both worth doing if you like animal exhibits. If you only have time for one I prefer Maharaja.
We don't bother with Rafiki's Planet Watch. we went there once, and it was a waste of time.