Otherwise I don't dare say 'this is a reliable comfort read' about anything because next time I look at it, chances are good it won't be. Maybe Robinson's Wang Wei, still; but maybe not. Maybe Kawasou Masumi's oeuvre, but I've reread very little of it in fact. (Am always happy with her new stuff though.) Maybe Hundred Demons, but I had a spell of compulsive rereading that one (umm- late summer of '06 through winter of '07, I believe) and I'm not sure it'd work again. At the moment, Pratchett for sure (finished rereading Men at Arms in last night's netlessness) but no guarantees about six months' time, and a strong feeling of probably not. Maybe Sherlock Holmes, but only because it's been so long since I first read him that I've forgotten the stories.
Maybe in fact I'm at the winged chariot period where I no longer feel I have the leisure to reread much. My stories at least have the virtue of being readable in half an hour, which can't be said of any books I know.