I'll defintely go for all the Moneky Island games (up to part 4),
I've got originals of all the games except for Monkey 2. Monkey Island was the first adventure I ever saw and this game really impressed me and I could never let it go.
I never had a PC up to 1996 so I didn't play the games on the PC. But in 1998 I downloaded Day of the Tentacle, if this game had been released on the Amiga, then this one would be one of my favourites too.