Kevin, when it's up, that UCO SN site is very nice.
I really like MTSU's site. Ton's of info and pictures. Very glad they are back on campus already.
http://www.sigmanumtsu.com/
Nebraska's is fairly new, and nice:
http://www.sigmanu-unl.com (I dig house tours).
Bowling Green's site is very clean:
http://www.bgsigmanu.com/