Just that really :)
I'm 27 weeks today and think they recommend going between 28 and 30 weeks. Did you have one and did you like it? My sister is pregnant too and was a bit freaked recently as her baby had a very flat nose :o She had one with first DS and liked it better.
Any recommendations on best time to go? Is it the case that at 28 weeks you see more of the 'whole' baby and 30 more detail in face?