Well of course no herbs and spices are unknown to ALL Americans, I'm sure there are many out there who have used them all, but it seems to me that a lot of them are neglected here. Everyone I know has thyme, nutmeg, rosemary, etc. in their spice rack, but it seems to me nobody has Saffron, Ajowan, Tumeric, some of the things that are so popular in other countries seem nearly unheard of here.
There's a Penzy's (somebody on another site i frequent recommended them) within driving distance, so between that and mail order, even the most rare and exotic spices from the farthest reaches of the Earth can be obtained easily. Little pricy, but not prohibitively expensive.
Oh and thanks everyone for the friendly welcome!