Yep, I'm running ShapeShifter on my 060. It's really nice with my Picasso IV. I run System 7.5.5 with it and that's really stable. I tried Fusion and Basilisk too but they are not that stable on my system. Fusion also has trouble with my cd-rom but the resolution swithing within the emulation is really cool. I also tried MacOS 8 and 8.1 but I for me 7.5.5 works best.
Anyway I use it to play around with games that sadly never made it to the Amiga or are better on Mac. So far I played Syndicate (high res and 256 colours and more sounds), Simcity2000, Warcraft 2 and Settlers 2 demo. They run fine.
About Starcraft; isn't that game only for PowerPC Macs?