I am house sitting/dog sitting for a friend for 2 nights and decided not to bring my PC over since it is such a pain to disconnect and reconnect and it is so heavy. Case was 55lbs last time I weighed it, plus all the cables and 3 external drives.
So I just grabbed my headset and one external drive.
Surfing and watching movies is pretty much the same, but if you need to do any file management stuff, XP needs a lot more clicks to do the same tasks.
Only 1 more night of XP and then I'll be back to Windows 7 (I am actually home right now posting this since I had to grab a few things I forgot yesterday).