Stezo2k
S-2K
Well it looks like it:
Source: http://www.wired.com/news/technology/0,1282,64914,00.html
A Silicon Valley startup claims to have cracked one of most elusive goals of the software industry: a near-universal emulator that allows software developed for one platform to run on any other, with almost no performance hit. In demonstrations to press and analysts, the company has shown a graphically demanding game -- a Linux version of Quake III -- running on an Apple PowerBook.
"One of the key breakthroughs is performance," Wiederhold said. "You can't tell the difference between a translated application and a native application."
Source: http://www.wired.com/news/technology/0,1282,64914,00.html