I've also been really liking my E-P2 it's had some pretty cool features to play with and best of all it's got me shooting more and more.
EVF - It's actually really good, bright, magnifies nicely when manual focusing and has the cool ability to angle up to 90 degrees.
Video - HD video is very cool with this camera, my first HD video camera just starting to play with video
Multiple Aspect Ratio - Cool ability to shoot in different aspect ratios
Live View histogram - Very nice feature to be able to see your histograms live and have them displayed in the EVF or the LCD.
I've ordered Canon and Nikon lens adapters so I'll let you know how those look once I get them.
Not to self promote too much but I have some articles on the E-P2 available at
http://www.knowphoto.com/tag/olympus/