The paper on it by Steele and Hillis is well-worth reading, as the language's fundamental mechanism of parallelism bears more than a passing resemblance to the MapReduce of 20 years later.
I used Star Lisp to program a Connection Machine 1 (the SIMD one) in the 1980s.
I could run the simulator under Coral Common Lisp on my original Macintosh, so, development was very nice since I didn't have easy access to the DARPA provided CM-1 (I had to fly to another city to access it).
He has been involving in Cilk, Akamai and Tokutek.
EDIT: I take that back. Perhaps this is his brother.
So emulating the hardware itself is not especially interesting as there is no real software for it (because it does not run standalone programs).
That and finding the install tapes ;-)