Not too many! I just turned in my 2007 335 coupe so I am not a member of the BMW family at this point but I loved the car.
I have been a member of the E90POST Forum for quite a while and the Omaha activity here is minimal.
However, I live in northwest Omaha and have seen a new 135i a couple of times recently.
Good luck with the car, I nearly leased a 2010 M3 but got a faantastic deal on my Porsche - I will be getting it out of storage in the next coupe of weeks. It has been quite a winter!
Did you get the car from Markel? Report back when it comes in.