[Mutiny32]

The compatibility mode for Win7 is astounding compared to previous versions of Windows. It goes one step further by actually telling programs that it is actually a previous version of windows instead of just running in a compatibility layer.

That's the one thing about Win7 that has impressed me the most by far. Well that and Microsoft's discovery of ACPI and actually having the audacity of tweaking polling intervals of various things and having a smarter screen brightness daemon for laptops. It roughly doubled my battery life on my XPS M1530.