My favorite bit was when they started asking the audience for beer/bar suggestions. I think Yumi's English has gotten a lot better. Some of it was rehearsed with notes, but there was some ad-libbing going on too. Puffy CD List with Lyrics at Puffy AmiYumi World. The girls took several breaks to talk to the crowd. Here is the second part of Mike Toole's concert write up for Puffy at Anime Boston.