No One Other Than Glover
I don't think this movie would have been nearly as good with a different actor. I think Glen Morgan made the right choice casting Glover.
Dragonzord! Mastodon! Pterodactyl! Triceratops! Saber Toothed Tiger! Tyrannosaurus!
I have not seen any of CG's work other than BTTF so watching this film all I can see is a twisted George McFly. Not to say it was the wrong casting choice...just my impression.