Looking for Hentai and Manga collections? Formely know as Doujin-Moe.us, Doujins.com is a site filled with English translations of popular manga magazines and comics. The left hand side of the site shows popular categories where you can choose between many Manga based terms... all of which I have no idea what they mean but if you're into this, you'll understand it!
The right hand side has news categories and monthly archives which run back to February 2007 so there is a nice archive of content here. The middle part of the homepage shows latest translations and there are so many thumbnail previews here I can see why you are into Hentai and Manga.
Newest galleries is probably one of the best places to start. You'll get a thumbnail listing of comics to choose from and if you click one, you'll get taken to the whole thing. You can either view online or download, and lets be honest this isn't something your wife will necessarily moan about! Tags and artists let you narrow down your choices by categories and by well known artists, so if you find one you like you can seek out more of their work.