Last night we upped the RAM count to 6GB (from 2GB). I'm pretty sure that was completely unnecessary, but it is still sweet. There are some weird things you notice when you get that much RAM: the pagefile is reported by Task Manager to be over 12GB, and the hibernate file takes up over 6GB. Hopefully it doesn't actually think it's going to be using that hiberfile anytime soon--it would be tough to check my e-mail. :)
It's also now running a Radeon HD 3850 512MB graphics card, but the purpose of that is to test how good of an output we can get on a TV through component outputs, and it will soon be replaced with a lower end Radeon HD 3450 that is passively cooled. Then our poor little server will have yet another job: HTPC.