I can't believe there's so many people who have never played them... really sad, they're so good.
I contributed the book scans for one of them on AB (I thought they were already on?

) - I think QFG2, though it might have been QFG1, I don't remember. I still have all the original boxes, disks, and manuals for all of them, even QFGV (blargh).
The first game was originally titled Hero's Quest, but they changed that to "Quest for Glory: So You Want to Be a Hero?"
Definitely an adventure, the only RPG element is that you have a class and stats you need to train, but the interface and gameplay is otherwise adventure style.
You really can't beat old Sierra adventures. The cheekiness and cleverness of many of their titles are just brilliant. Roberta Williams is a genius, she's my idol