I started this topic in the chat archive so everyone can see who was invited in the past. Some of these people might make good guests once again - like an update on what they said 2 or 3 years ago.
So far members have mentioned
Aubrey De Grey
Please use this thread to make suggestions. The best suggestions would be someone you know or have a connection with, that way it might be easier to get them to appear in the Sunday night chat. Sure, it might be nice to have some famous celebrity or politician, but it is probably not worth the effort to contact these very high profile people. I am thinking more along the lines of transhumanists, researchers (working on new exciting life extension type stuff), professors, etc...