I just downloaded and tried out the single player demo for Hellgate: London last night. So far, I’m pretty impressed, it feels like a revamped version of Diablo 2, and all of the skills so far have a really good feel to them.
What’s your take? 
It remains to be seen. I played through as both a BladeMaster and a Marksman, and it was just like a different perspective Diablo II. Somehow it doesn’t have the same addictiveness though. I’ll probably buy it eventually, but I’m in no rush. It’s also nice that a current and decent game has such low hardware requirements.
Pretty much though, my gaming life is just a sad wait for Portal 2.
I admit, I’m in the same camp here. Nothing else will truly satisfy me until I get more of GLaDOS, but I might be able to find something to ease the pain of the wait. 
Well the Fileplanet link in the OP didn’t work very well for me (40kbs bleh!) so I searched and found this Link and it’s getting 400+ for me so if anyone else is having that problem try this one.