I'm sure you all know about it. If not, a simple Google video search will clear things up. Thoughts? I myself like the whole concept. I play Narbacular Drop, it's predecessor, and even made a few maps of my own. I greatly look forward to this enhanced version, and also to hopping on the mod team that decides to make a ND mod of Portal, as I am, to date (and the knowledge of anyone I know), the ONLY one to be able to open the models for it, though I lost animations in the process.
They released the swep for it for gmod9 awhile ago. I think I still have it actually...I remember it being good fun ^-^
I had that swep also, it crashed the server too much when I put it on. Also used it on the TV screen in gm_hugeflatmap and fucked it up pretty bad.