I remember when Alfred Perlstein (FreeBSD committer) invited me into #bsdcode on EFnet in the late 90s/early 00s after I kept pinging him with random kernel questions. Was fun idly chatting and learning from folk like John Lemon, John Baldwin, Jordan K. Hubbard (before Jobs snatched him up as Director of UNIX technology for Apple (pioneering the BSD element of today's OS X)).