So today I decided to give my aging MBP a facelift. Upgraded to Lion, cleaned out the hard drive, and finally, attempted to clean the keyboard. After popping the "command" key off, a tiny, rubber part was accidentally removed as well. I tried to lift up the first layer of film with tweezers and insert the rubber part underneath but to no avail. Unfortunately, my keyboard stopped functioning properly soon after. My suspicion is that the tweezer grazed the actual sensory input (what the rubber piece normally "strikes" to register a key being pressed -- I marked it green on the image above), etching the film and forever tricking the machine into thinking this key is always being pressed down: when I click on an app in the dock, I am brought to its containing folder. Has anyone had a similar issue, or know how to get the keyboard fixed? I don't have the money for a new machine, nor am I covered under AppleCare or warranty since the machine's so old. I'd really appreciate any help. Thanks guys.