LotR, Star Wars, Watchmen, Mario, Aperture Science, Captain Hammer, Riven, ?, Mortal Kombat, Serenity, X-Men, and Pokemon, I think. I knew all but one! Love it! Cool idea, I never realized how many circle logos there are
It was the sequel to the video game Myst? I never played it but my husband was a big fan. Probably the most obscure symbol on there. I reeeeally wanted to do the logo to the Umbrella Corp from Resident Evil, but it's not quite round.