Can anyone suggest some interesting snow shoe trips in southern Oregon, other than Crater Lake? I am thinking of, south of Crescent Lake area. I have done the lake a few times and would like to try something different.

Total side note, should I refer to them as the southern Cascades or the southern Cascade?

I'd say southern CascadeS. Van Tilman has a good backcountry ski guide to Oregon that you could use for some suggestions.

Also:
FWIW,
Snowshoe Routes: Oregon by Shea Anderson
http://www.amazon.com/Snowshoe-Routes-O ... 0898868335