The Absolute Best Session on ASP.NET
I have not attended all that many ASP.NET sessions (just the ones I'm required to review) since I already know all of ASP.NET (ha ha), but "Real-World Tips for Real-World Web Applications" by Paul Sheriff and Ken Getz is definitely the absolute best of all the ones I have seen. It may even be the best of any period that I've seen, although I have not mentally walked through all the others to be sure that is the case -- but it may be. Apparently the audience thought so too -- it was standing room only and lots of good vibrations were evident during and after the session. I haven't read their book, but I'm thinking it might be one of the best out there based on what I just saw -- and they also did say it was the best!
By the way, CommNet only gets worse as the week goes on. Sometimes I can actually do much better on my SprintPCS Handspring Treo!