I remember the "Way of the Tiger". I have every book and the last one, Inferno!, ended on a damn frustrating cliffhanger. Looking it up on Wikipedia, it seems that this ending might have been intended, which if true, is really sucky because it has your hero being trapped for all time.

Also, I have the full set of the two-player gamebooks, Duelmaster, written by the same two persons. Anyone want to play them with me?