serpantino
Thousand Master
I can't say La Blue Girl, Bible Black, Urotsukidoji, Mezzo Forte, Kite etc have ever really sparked my libido .And I bet your parents secretly enjoy the ecchi titles, too - us old folks still have a libido as well, lol.
For some bizarre reason, younger me collected as much that was banned or censored in the UK as possible, resulting in some damn awful film ownership not just anime (Stuff like Ebola Syndrome, Last Orgy of the Third Reich, Fight For Your Life.)
I don't really watch any of them nowadays (except the odd session of Urotsukidoji 1) but owning them still amuses me for some reason.