GXemul is a fantastic emulator that has great PPC & MIPS emulation.
Has there been any talk about QEMU acquiring all of the voting stock of GXEMUL? (sorry, MBA school talking) Obviously I am speaking metaphorically.
Also with 1.00 on the horizon, does anyone suspect we'll be able to boot Solaris/SPARC? I think this could quite nicely inspire someone to write a Xen/SPARC hypervisor...