nemissa recently posted about an awesome site,
The Backloggery. You can create a library of your videogames and label which ones are incomplete or in various levels of completion. I've created
my own backlog page; it still needs some work, but you can see where I am on a lot of my games currently (and how shamefully few I have completed).
The cool thing is that you can embed a list of the games you're currently working on, like so:

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Man, I am envious of your completion ratio though! And my lackluster gameplaying over the past few years hasn't necessarily just been a time matter; often it's "I meant to play but got distracted on Wikipedia for 5 hours, no gaming today whoops." D:
I think the site encourages anal standards for "completion" though! I have very few games I labelled "complete," just because I often beat a game, may come back to it, but won't necessarily do everything for it (like bitchass-hard sidequests and such; like I still haven't beaten NSync!Sephiroth in KH or KHII). But I do consider something completed if I've done everything, within reason, to complete the game (so, for example, I have to completely fill out the item list for an Atelier game, but don't necessarily have to fill out every stat of every monster in the monster log).
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That's probably a much saner way to look at it. XD
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And truly completing something like Tactics Ogre is an accomplishment that I'd like to put on there! Unfortunately I haven't been able to find another copy of the PSX game for love or a reasonable amount of money. D: