Most of this thread took place before the Jan. 09 White bro's yeast show. I think the question was posed, what happens if the vial freezes in transit and whatnot...
If I recall correctly, one of the Whitey's said that you will loose about 10-15% of the total cell count when frozen in this manner, but that if the vial was highly viable, you should be fine w/ a starter.
I was surprised by this answer... but it came from the horses mouth. I was always under the impression that the majority of the cells would have been destroyed. Apparently I'm not as smart as the whites  
 
   
   
 I think the key is to just toss it in a starter, and if it looks good/strong enough, go ahead and pitch that shit.