OK, so this is ~2 years late… it went great. A group of about 9 people read through the whole book. We spent an hour each week discussing the language and programming assignments for the week, comparing notes, and talking about how the languages in question compared to our day-to-day work in java and ruby. Highly recommended, and I think the whole 7 in 7 weeks series makes for great reading-group fodder. We started in on 7 databases in 7 weeks right before I took a new job, so I don't know how that panned out, but I expected it to be a good read.