I don't know if this has been posted already, but the list in the OP is (in a minor way) incomplete.
Because of german regulations that do not allow for games/media etc that are rated 18+ over here to be given out for free, Dead Nation and inFamous were not on the list in the german PSN store. Instead they were replaced by Super Stardust HD and and Hustle Kings. The others (Wipeout, LBP and R&C) were available.
That was pretty irrelevant for me as I immediatly got LBP and Wipeout, but I taught it's maybe worth mentioning.
BTW: Both are awsome games, and getting 2 AAA titles for free, even if they are old, when I would have had to pay 30 retail price for LBP and about 20 for Wipeout in the PSN, is about the greatest move Sony could have made. I can not see Microsoft giving out Halo for free. Thanks Sony!!