Games using multi-cores or 64-bit

A little while ago one of the tech websites did a comparison of a standard quad-core (Q6600 I think) vs a fast duo. The duo was better on most measures, except for one of the benchmarks that utilized separate cores efficiently; then the quad was way faster.
And I bet a 64-bit software would be faster than its equivalent 32-bit software on today's hardware.

So: when will video companies start making PC games that are 64-bit and/or can take advantage of separate cores?

PS: I'm talking to YOU Chrysis! You're no doubt proud that your game can't be run efficiently until 2009 or thereabouts. Sure, real cute, make our PCs look weak and slow. But I blame YOU: why don't you redesign your program to utilize the hardware that we have now, huh???

Crysis in 64 runs no better than 32, hardly uses the extra cores and wont use but a 2gig of my 8gig of ram.

In x86 64bit is mostly about addressing more ram so if you don't use it there no real performance difference.