off the top of my head...
fire resistance
badges
Nature resistance
Craftable from CE rep
Frost resistance
Craftable from kara rep i believe?
Shadow resistance
Craftable with BT drops [hearts of darkness]
Arcane resistance
BS'ing -- adamantite set
Holy resistance
Don't know of it
Enchantments --
helm&legs -- 20 to fire resistance -- libram, also the NR enchant from CE
shoulders -- Naxx rep based enchants
cloak -- +15 shadow resistance, +15 fire resistance and +7 resist all i think?
NR lw'er kits
SR lw'er kits
just found this also --
http://www.ampwow.com/wow/viewResistances/0.php!tab=plate&resistance=arcane#startContent
Although, it is not a 100% complete list.
Also for enchants, look up http://www.shadowpanther.net/
then just click on whatever resistance set. It will give you leather items and such, but enchants are all the same.
Edited, Feb 20th 2008 3:21pm by russki