Winter in London by Waid: nth reread. I was depressed and this is comfort reading (though read the warnings before you try it).
The Cat Who Knew Shakespeare by Lilian Jackson Braun: more comfort reading; earlier in the series than the ones I read as a teenager; about as fluffy as serial arson can get.
After the Ice by Steven Mithen: aka The Brick. I've been working on this one for two or three months and am very nearly done.
Cotillion by Georgette Heyer: Anonymous rec for non-alpha-male hero. I've only read one Heyer before, when I was a teenager, and I forgot or didn't notice that she's funny. Seriously, this is hilarious.
Respect the Spindle by Abby Franquemont: Background reading.
Sorcerer to the Crown by Zen Cho: I don't have nearly as much time waiting alone with my purse here, so I've kind of left this, despite it being very good.
Also I reread about half of Women's Work by Elizabeth Wayland Barber and read an article on Algonquin archaeology (mostly stone points, very dry) and bits of a book on Iroquois women (justifiably very angry) at the university library on Monday.