Erikzen, you are NOT the only Olympus user on Head-fi.
For what it's worth, Olympus dust reduction is industry leading. Many tests have been conducted comparing the dust reduction capabilities of the Olympus DSLRs with those of Canon and Nikon. It has been found that the Canon and Nikon ones were lacking behind what Olympus had to offer.
In body stabilisation for me was a fantastic feature of the E-510. I didn't need to worry about spending the cash on lens with VR or IS and feel that I'm missing something. Plus, with the superb 12-60 lens, you get an awesome combination in a camera.
Olypmus seems to be very innovative. They developed the Live View concept for DSLRs, now Nikon is copying it for the D90, which should be an awesome camera, btw.
The 12-60 looks like an awesome lens Definitely on my short list. My current favorite lens is the 50mm macro. Takes great macro shots but is also excellent for portraits.