Ok, there are not only obscure stuff. More blasts from the past, that really would deserve a better exposure. In term of non-Marvel/DC comics, things from Bernie Wrightson, P Craig Russel, George Besse, Alberto Breccia, Moebius, Druillet, Scuitten/Peeters, and others. In term of letters, once again the almight Lovecraft letters are really jaw-dropping ! For movies, I discovered Vincent Price, Sam Peckimpah, John Ford, Wim Wenders.
So nothing really out of the "normality", but they are no longer marketed and are slowly fading to grey.
Bernie Wrightson's is beyond awesome, fills me with nostalgia for a time I never lived through.
The Roots of the Swamp Thing collection is really fun and serves as a fantastic hors d'oeuvre for reading the famed Alan Moore run.