For those that have fond memories of this excellent ebook reader on Windows mobile or for those still using it, David has been working on an android version of uBook. It's still in beta but is quite advanced and has all the features of the original WinMo version - as well as improved epub support.
I've been a happy uBook reader since 2004 and this has made my reading experience on my Desire that much better.
If you want to try it, it's at:
http://www.gowerpoint.com/uBook2011_main.html#down
I've no affiliation with David or uBook apart from being one of his happiest users.