[arch-ports] Any major non-64-bit s/w?

Going to retire my old Arch server soon, and the new one (my current desktop) is a 64-bit machine (AMD Athlon 64). So I'm leaning towards taking the plunge and installing Arch x86-64 on it. Just wondering though if there's still any major packages that aren't available in 64bit that might make me want to rethink this decision. The only package I'm aware of that I use frequently and is not available in 64-bit is flashplugin. 1) Anyone aware of any other notable exceptions? 2) Is there any workaround to be able to use the 32-bit flashplugin with firefox? TIA, DR