Beyond specific things like the joint coffee room (see above) and making masks for the ALFOSC MOS mode (see below), there has been some more general interaction with the TNG staff. We have initiated joint TNG/NOT seminars in the TNG conference room, and as part of the joint call for observing proposals we have set-up a joint computer domain (tng-not.iac.es) and web site that we maintain. For the moment this is only used for the joint call, but it is in principle intended for more extensive cross-community use in the future.