Games I Should Really Finish

As an avid PC gamer, Steam and I are like this!  (Imagine me crossing my index and middle fingers)  It gives you so much freedom with your games, has built-in chat, and saves all your game settings across multiple computers.  Aside from being a great game platform, it is also a distribution system for many developers.  That means that they always have sweet, sweet deals.  Whenever I see something like Braid for only $2.50, I must have it.  That being said, I now have so many games that I really need to play.  So many in fact, that it almost seems like a chore.  I found that I need to carefully plan out which games I must finish, and in which order.  So here is my list, in order of priority, of the games I must finish.

Magicka
This is such a unique and fun game.  The game mechanics introduced in this game are ideal for playing with a bunch of friends.  You play as a nameless wizard who must dungeon crawl and use a unique set of abilites in a variety of combinations.  It's fun, it's addicting, but it also suffered from a large amount of bugs on launch.  This made it very frustrating to play, so I haven't touched it in months.  Hopefully with the new DLC releases, some of these issues have been fixed.

Super Meat Boy
What a premise: a boy made of meat must rescue his girlfriend who is made of bandages from the evil Dr. Fetus.  This ridiculous setting is backed up by some of the most intense platforming I've ever experienced.  Full of a shit-ton of short-and-sweet levels, a variety of characters, and a level-editor; this game has a ton of replayability.  I started this game enthusiastically, but then I had Christmas break and I wasn't able to play.  Once my break was over, the fervour I once had was gone.  But with summer coming soon and plenty of batteries for my gamepad, this is a top priority of mine.

S.T.A.L.K.E.R. Series
I've heard incredible things about these games.  I've seen many screenshots and videos of this game and they look gorgeous.  So why haven't I played these games yet?  The incredibly immersive environments and unique gameplay features make it a great game experience, but I hear that it also takes a while to beat.  Add to the fact that I have Shadows of Chernobyl and Call of Pripyat, and we have a very daunting task ahead of me.

Company of Heroes
$2.50!!!  That's how much I got this for, how could I resist?  I'm not a huge fan of RTS games, but I have heard great things about both the gameplay and storyline.  Plus it's set in WWII; what was once a fad in the early 2000's is now a rarity in today's games full of modern warfare.  (See what I did there?)  Now to train myself to handle so many actions at once, I hope my feeble mind can take it.

Games that I should finish but probably won't:
Machinarium - Got it in the Humble Indie Bundle, haven't touched it.
Overlord - Same deal.
Deus Ex - People are totally going to flame me, but I just can't bring myself to play it.  I know it's supposed to be amazing, but I just....meh.

So what's the verdict?  Are any of these games worth my time?  Please let me know, I should probably do more productive things with my time than playing a ton of video games.  Oh who am I kidding?