I love a lot of the Sierra games that were made for PC and ported (poorly) to the Amiga...even though the screens look better on PC, for some reason, I like to play them on my a4k more then in DosBox
My favorites are the Hero's Quest/Quest for Glory series. Those games are awesome! After that, Space Quest, and Leisure Suit Larry. They are timeless. There haven't really been any games like that since, unfortunately.