I just ran across an ad for Microsoft's 'Project Server 2002' (part of the .NET family of servers or so it says), containing in the background a slightly out of focus bookshelf which includes the titles 'Programming Perl', 'Perl Cookbook', and at least 2 other O'Reilly titles (can't tell what they are though). The ad is a 2-page spread and there's only 12 books on the shelf, I thought it was mildly amusing that the perl books stood out the most (the 'Perl Cookbook' is especially easy to identify, having the largest type).