Hmm, just Googling around...
Big Endian and Little Endian have to do with byte sequencing. I have no clue what that means as far as what the difference would be between picking Little Endian character encoding vs. Big Endian or any other Unicode or Western encoding scheme for that matter.
I figure that you at least want to stick with either Western or Unicode though, and not something like Vietnamese encoding (obviously).
A "little endian" byte used in Intel processors has the following bit values:
1 2 4 8 16 32 64 128
A "big endian" byte used in Motorola/Texas Instruments processors has the following bit values:
128 64 32 16 8 4 2 1
Completely useless information except for programmers and hardware folks.
I tried various UTF encodings in this Firefox 2.0.0.8 running on a Linux box, no change at all. Sigh.