I've had WinRAR installed on my work PC for years (November '13 if the created stamp on the folder it's installed into is to be believed) and for all that time whenever I've wanted to look at the insides of a NuGet package (.nupkg file), I've gone through the laborious process of renaming it to .zip, then renaming it back when I was done. Apparently, WinRAR has an option within it to associate it with arbitrary file types (like .nupkg) and it then appears in the context menu. I wish I'd found this sooner! With a bit of luck, having this blogged means I'll be able to find it when I need it post computer flatten and rebuild in the future.
As I get into developing Orchard / against Orchard, I think this will probably come in handy. Yes, there's intellisense, but a curated list of stuff never hurts, especially as intellisense shows you "all of the things" and the struggle to see what's relevant / not-relevant / actually useful begins!
An interesting read on the subject of using non-integer primary keys in databases (do read the comments though, they're of as much value as the posting itself.