ROT 08 is behind me (damn, it went too quick!!)
The next big Rally in the area that I'm aware of is the Golden Aspen Rally in Ruidoso New Mexico. Here is the link to their official web page:
http://www.motorcyclerally.com/It's a great rally and its a BIG ONE! Lots of mountain riding, lots of bikes, poker runs and tours every day, and a motorcycle raffle (as grand prize) on saturday for registered attendees.
After this rally, check out the rally in Snyder Texas (2008 White Buffalo Bikefest) which is held from 3-5 October:
http://www.whitebuffalobikefest.com/2008/Hope to see ya there!