I've had a 2009 E61 535D for about 6 months and finally got round to joining.
I have to say, what an engine. Coming from a 1.8 civic, it was a big change.
I owe you guys a lot of thanks already for sorting out the common issues whilst they were still easy fixes and not big bills.
Work Done already:
Main and EGR Thermostats replaced
Glow plug controller replaced
Runflats replaced with non-runflat tyres
Angel eye Bulbs replaced with LEDs
Dashcam fitted front and rear
The Black Grill and Tinted windows were done by the previous owner
Next on my list is to get the wheels refurbished as they have some kerb damage and also corrosion around the center and the wheel nuts.