Status of 64-bit OpenOffice.org for AMD64
OpenOffice.org is the only missing 64-bit application on my computer. OpenOffice.org 2.0 is about to be released in a month or two and they are finally working on porting it for AMD64 and compatible 64-bit systems. Currently it builds (without Java or Python). Some things that work are: first time installation, splashscreen, about window, opening new documents. I hope they make everything work for the final release.
You can find more info in this blog entry from Pavel Janik:
OpenOffice.org@AMD64: Current Status