Oh yes,
Classic Mode, running in emulation under Mac System 10
Motorola x68 code running under emulation on PPC
and yes, Windows on any Mac
Apple got this one down a long time ago.
Here is the real history.
Connectix creates Virtual PC for Mac
Connectix is Purchased by MS and released as freeware to anyone who wants it on their Windows PC
Apple decides to build their own Virtual Machine to allow OS9 to operate on OSX
Windows 7 provides complete integration between Virtual XP and Windows 7.
So yeah ol’ Apple sure was a real trailblazer there.lol.