The Language of Mathematics: Making the Invisible Visible | 
It has some history but it doesn't get bogged down by trying to stay chronological or include every historical detail. It sort of "whets the appetite" for studying math beyond the textbook.
It's good. It was fun. It just didn't grab me. I think I wanted more detail. I felt like it was little too popularized or "dumbed down". And yet, I didn't feel it was "sparkly" enough to appeal to students.
Entertaining but not practical for classroom use.
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