Ouroboros, just now. I'm warming to series VII. There are better things in it than I remember. There's a lot in it that doesn't work. I still cringe at the idea of Lister being his own dad. It makes no sense that he and Kochanski could continue to produce a genetic duplicate of Lister each time in a temporal loop. I can suspend belief for many things, and I can accept some things don't need explaining in a half hour science fiction comedy, but infinite autopaternity doesn't fit that bill.