This particular project I've been on is making judicious use of the InternalsVisibleTo assembly attribute. It's one of the handiest little capabilities I've fallen for in some time.
Coincidently, part of why I like it so much is that my life is a bit like having InternalsVisibleTo for every single other person out there. In my quest for transparency being able to let others have a peek behind the curtain is must once in while.
Mind you, I'm nowhere near as capable in this department as my good friend Brian who just seems to have people falling all over themselves to socialize with him wherever he goes. No kidding, the man spoke to her for 3 minutes and she was making doe-eyes at him! Next day, the security guard wanted to give him a special Private Screening (if you know what I mean). And lastly, in the cafeteria, some random person actually just came up to him and asked him about the proper use of dental floss! I swear this is true, I couldn't make this up if I'd tried. Dental floss! At what point do you just walk up to someone and ask about how to use dental floss? He just brings this out in people. I should probably be inspired, or better yet take notes and ask for lessons. As it is, I just ride the roller-coaster of being depressed that he is so much cooler than I am, and then feeling superior because of how cool my friends are.
Good thing I'm straight or all this gushing over a friend could be misconstrued. ;-)