The Crysis demo has been out for a few days and we have already heard from various people that Nvidia's SLI doesn't work.
We would probably let this one go, if Crysis weren't a "The Way It's Meant To Be Played" title. Nvidia reacted and issued a statement that the full game will support SLI; of course, this will happen after you install a patch. In addition to that, it looks as if the Forceware 169.01 64-bit drivers also have some problems with the 64-bit version of the game.
We know that Crysis is only a Beta, but since we are talking about the TWIMTBP title, SLI is a must. Another interesting story about Crysis just went online, so be sure to drop in a bit later.