Thank you Kevin, can it be found in the average local grocery store? Food Lion and the such. I'm trying to start building my spice cabinet so I can make all these fantastic rubs and injections I've read about on here.
In addition to Penzey's (and Kevin's other excellent links) I also suggest you check out Aromatica Organics's products. (Their individual spices are not available online, though.)
Also, some of their rubs are even available in a salt-free configuration, and the other salt-inclusive blends are likewise pretty good if a bit (duh!) salty...but easy to reverse engineer in a salt-free way.