http://2-trackmind.com/ Studio in Portland I did a few sampling projects with. Seth is a great guy and was very helpful, and they have some pretty cool gear! The blog there has some interesting posts about old gear too!
http://zabukowski.com/software/ This guy makes some great software that makes organizing your Nebula collection a lot less painful. You can have different Nebulas set up for different types of effects, like one just for reverbs, or you can organize them by developer, or however you want. Check it out!
http://soundyaudio.com/ Rich has been really helpful to not just me, but many in the Nebula community over the years. He also has a service for audio work of all kinds, so if you need something audio, check him out!
http://www.acustica-audio.com/ No description needed, I should hope!