Sign languages are different in different countries... and I bet, in a way, each one has its own "accent".
The band Savage Garden had a music video, "Crash and Burn", that I just love because at the very end, the lead singer performs the lyrics in Aslan (Australian Sign Language.)
If you ask me, those eyes are an accent all on their own!
[video=youtube;W60IPexop30]https://www.youtube.com/watch?v=W60IPexop30[/video]