Somebody has actually come up with a way to mass-produce REAL diamonds (i.e. not cubic zirconium or whatever), and if it catches on, I think it can SERIOUSLY change the way computers run. Diamond is capable of withstanding way higher temperatures than silicon.
http://www.wired.com/wired/archive/11.09/diamond.html
The only problem is, there's a chance it could put the whole diamond industry out of business. Honestly, I don't care, I just want faster computers.