Keeping with the obscure stuff, here's Sharpless 2-3 in Scorpius. I probably over stretched it a bit as the background is pretty noisy. I think this would require 3-4 times the exposure to get all the faint Ha in the background.
Cheers
Steve
http://members.pcug.org.au/~stevec/Sh2-3_STL6303_RC.htm