Hm. This list is a good start, but I'd also like to see SecuROM and it's ilk called out, since I've had personal experience where one of those messed up my computer.
Also, doesn't Steam make you phone home at least once before you can use an offline profile?
I may put all this into a seperate Google Docs file with public read-access at some point, which would be a better point to include info about the local copy protection.
And Steam-forced games are no-go on this list because as you say, Steam needs to phone home beforehand before you can install the games. While there are a few exceptions for games bought directly from Steam (i.e. you can buy the game, download it and copy the directory out manually), I've never seen a retail game that you can do this with.