Don't forget your AV, office suite, browser, all those little apps you love - while they're small they will add up.
Not really, if you're not the person who just clicks "next" all the time on installing stuff. I have installed on my SSD two media players (MP3 and video), media filters (ffdshow and the like), two digital image editors, Office 2010 (albeit, I only installed Word and Excel, because I don't need the other ones), and basically all the other stuff I will need. Total program folder size is short of 6GB.
Games are about 8-12GB PER game. You can install these onto a larger mechanical disk, but these are the items you want to boot quickly and benefit from an SSD, right?
On a side rant, I don't like how no "professional reviewer" has done any testing with load times and SSDs. But from "amateur reviewers", it's hit and miss on a big performance benefit an SSD provides on loads. And from experience, I would actually have to agree to an extent. For instance, I put Skyrim on my SSD. I didn't notice any real improvement to load times or stuttering, but this may have been because Steam was doing a double look up (i.e., symlink to mechanical, symlink to SSD), but that would only affect the stuttering.
Besides that, the only thing you're buying here is decreasing load times, which may also have a CPU dependent portion to it (if the game is compressed, then it will spend a minimum amount of time at the CPU). And most games today are pretty good at keeping you entertained while you wait. Not to mention for sandbox games like Skyrim and Far Cry 3, the only loading screen you'll ever see is the initial one. No, all those logos you see aren't masking load times. The game doesn't need a minute to boot itself up.
The one thing that may fill up without you noticing is the Users folder. Which if you want to do the whole shebang in one go: http://lifehacker.com/5467758/move-the- ... -windows-7