I love toys with a little creativity. Thus, I love Bone Age!!
The basics of Bone Age:
Take a bunch of bones and then transform them into dinosaurs and vehicles. Then take a scantily clad cave man, place him on your new bone creation and have numerous adventures and escapades.
And the names alone were worth the cost of a set:
Plesior the Stone Clan Hunter and Anklor the Lava Clan Hunter.
Plus, the dinosaurs were not only ferocious looking, but they could also play ball with those kids whose parents were too busy.