The Half Life 2 experiment failed. It played, but at a very poor 5-10fps with stuttering sound issues. Ah well. 
@Punkyova: I’ve never worked with a mac, but I would bet the interface wouldn’t be quite so happy as 2 macs. Still, it shouldn’t be too terribly hard to get the two talking to each other so you can share files.
Using some google fu there seems to be a lot of people doing this, and there were more than a few how-tos.
As for the netbook itself, after some more testing…
Surfing the internets - No issues here. Youtube. The Dope. IRC. All worked perfectly. It does have a rather high resolution in a cramped space, so some text enlargement may be in order, depending on your eyesight. Fortunately Firefox 3 handles zooming like a champ.
Typing - Keyboard is a bit cramped… I definitely will not be writing any essays on this thing. However, portions of this were written from the comfort of my bathroom, which is way cool.
Music/movies - No issues at all. I was able to play a dvd movie from my PCs drive while across the street. Tested a variety of different formats and codecs, and VLC played em all. The screen is, as I said earlier, surprisingly nice.
Gaming - Not great, but I wasn’t expecting it. It can(according to videos I’ve seen on youtube) play WoW decently(playable framerate, but not fantastic). Handles flash games fine though, and it played Homeworld quite well.
Peripherals - 3 USB 2.0 slots, 2 SD card slots, and a plug for a monitor(the old kind, not the new digital connection), plus headphone and microphone jack.
Battery - 1.5-2.5 hours, depending on usage, from what I’ve read. To new to say for certain though.
The biggest con I’ve found so far is that this particular model doesn’t have bluetooth. I could have sworn it did. No biggy though, since I don’t have and wasn’t really planning to get any bluetooth gadgets.
Bottom line, it does everything I need it to do, and then some. However, if a dvd/cd player is a requirement, or you expect to be typing a lot. I would avoid a netbook.