Don't forget the Indiana Jones games. Fate of Atlantis was a great game.
There is also Beneath a Steel Sky which is fantastic and now free. http://wiki.scummvm.org/index.php/Beneath_a_Steel_Sky
There is also Beneath a Steel Sky which is fantastic and now free. http://wiki.scummvm.org/index.php/Beneath_a_Steel_Sky
I've been looking for years for this! I thought the name of the game was "under a red moon" or something like that but I couldn't remember. There were some shards of memory from a secret moon base and a head in a water cooler, but I just couldn't recall the name, franchise or anything else to put me in the right direction.
AFK right now...
As games go it's a bit hit and miss, but if you already like Tex Murphy, it's a winner.