I have often been somewhat disappointed in a summit after having climbed a false summit that I found to be more interesting in some way - more challenging, more picturesque, etc. How about some examples where a false summit on a mountain is more interesting than the true summit?

Argonaut Peak in the Stuart Range, Central Cascades of Washington State. The false summit is a scrappy 5.6 summit block, requiring a full pitch of 5th class climbing. The true summit lies a short 3rd class scramble away and offers a much simpler 15' easy boulder problem, but does take the summiteer under a cool leaning bock that forms a unique tunnel.