Prepare angel food cake mix according to the package directions. Cut into 1-1/2 inch cubes along with pound cake. Arrange the cake on a serving plate with apples, pears, strawberries and pineapple. Meanwhile, combine chocolate candy bar and cream in a fondue pot. Cook over very low heat until the chocolate melts, stirring constantly. Dissolve instant coffee powder in hot water. Add to the chocolate mixture with vanilla and cinnamon; mix well. Using skewers, dip the cake and fruit into the melted chocolate. Serve immediately.