I just checked the updated entry list for the US XC Championships:
http://www.usatf.org/events/2010/USAXCChampionships/entry/status_Open.asp
Looks like Ritz and Shalane Flanagan are headlining the open races, but I see some other big names on the list too, especially on the women's side (Sara Hall, Molly Huddle, Magdalena Lewy-Boulet, Blake Russell, Katie McGregor, just to name a few).
Any letsrunners going? I know jaguar1 will be in the women's race and nikeman in the men's masters race. I'll be there doing the media thing and participating in post-race festivities.