As I said in the Adobe x64 thread, you can now get Adobe Flash Player for x64 browsers

Adobe Flash Player - Download - 32 & 64bit Versions

Java - Download - 32 & 64bit versions

The only thing I am missing is Silverlight x64, but other than that the x64 version of IE8 and IE9 Beta are very responsive, IE9 is very slick, I'm pleased with it

Time to ditch your 32bit browsers