Hmm, this may not be 100% accurate, but I think I can list all the bottles I've ever finished:
1 Brut (small bottle of aftershave)
1 Grey Flannel (mini, spilled the last bit of it)
1 Chaps (mini)
1 Bottle Polo (Green) <-- Edit: forgot that one, adding it later
3 Calvin for men (two bottles of the original formulation, one mini of the re-release and -formulation)
1 Czech & Speake Grapefruit (which was later renamed Citrus Paradisi)
1 DSH Poivre (small bottle of EdP)
And then I've "finished" several additional bottles by saying to myself, "Well, I'll never wear that one again" and stashing them in the back of the office closet. I do occasionally sell bottles, too, but that I don't count as "finishing" on any level.