The Digital Reader Blog (among other places) is hosting an older version of Aldiko 2.0 that run on pre-2.1 Versions of Android.
http://www.the-digital-reader.com/20...es/#more-21067
It installs and runs fine on stock firmware, no hacks needed.
It supports ebooks with both plain Adept DRM as well as B&N's version.
For DRM-free ebooks I still prefer Coolreader, but it's nice to have a choice.