Awe, an early present, just for me? Thank you.

...
Oh no, it looks like Santa drove his sleight so fast that part of the present fell down!

(I really appreciate the effort, but sorting a list by certain information is far more useful when you can also see this information.)
Completely random: I just learned that AGS was already around in the seventies!

There are a couple of games with a realese date of 1. Jan 1970 - obviously an automately generated date for games where no actual date was available. It would probably make more sense to change this to "Relese Date: not available" or something, but I doubt anyone pays that much attention to it.
Edit: Looking a bit closer, in the All Games List, these games have as their relesed date: "unknown", but on the individual games pages it's 1. Jan 1970.