Everyone should get this if they can as soon as possible as to not miss it.
Bethesda recently used some black magic to steal the rights of these games from Interplay, and it becomes effective starting in 2014.
This seems to be if nothing else, a big middle finger to Bethesda from Interplay to try and steal away potential buyers before Bethesda can start making money off the games.
That's reason enough alone to sign up for a GOG account even if you have no intention to ever play fallout or buy anything from GOG.