Kickstart II was a good one as well, although my brother had an uncanny knack of staying on those walls whilst I went for a burton...
Henry's House also brings back some memories. I remember having a nightmare about one of the levels (his bedroom?) where the lampshades had faces and they moved up and down. (lol)
Feud, I also enjoyed that one, collecting the herbs to make spells. I did hear somewhere that this, along with the game I'm going to mention below, was impossible to complete as one of the herbs required wasn't accessible?
There were so many other fantastic games, for anyone who's interested, take a look at http://www.lemon64.com for some classic C64 moments...
Universal Hero, another classic in the same vein as Spellbound, but set in space. I believe this was impossible to complete due to a bug.
Rick Dangerous (Indiana Jones but without the license!) was a bugger of a game. Enjoyable, but very difficult.
