A lot of nice looking models here!
I have to join this one as well (those GBs are addicting as hell)
I'll build a B-25D Mitchell. It's the AM kit reboxed by Academy. It says B-25G on the box, but you can build a B, C, D or G model out of it.
As far as markings go, I'm most likely going for a rather unconventional nose-art:
A B-25D called "Yankee Warrior". It is stationed at the "Yankee Air Museum".
You can look up it's story here: http://www.clubhyper.com/reference/b25flightse_2.htm
I'm afraid I wont be able to replicate the Waist guns on my model, as they aren't supplied in the kit...
Clemens