This is the first PC game I can recall playing:
http://en.wikipedia.org/wiki/The_Black_Cauldron_%28game%29I was hooked on PCs after that & all things Sierra.
King's Quest, Police Quest, Space Quest, Quest for Glory/Hero's Quest, LSL.
Man I really miss those games. There are so many other non sierra games but it would take me way too long to name all the ones I was fond of. (Mean Streets, EOTB, Battlechess to name a few)