You might remember Boyan Kostadinov from such places as my blog where he makes a habit of dropping awesome suggestions on me. This guy's like an idea-machine. Well, he's just come up with a new, very interesting idea: cfSnippetExecutor. Like me, Boyan suffers from a massive code testing directory (he, in fact, has a whole virtual site for it). This is due to the fact that every time we come across something that looks cool, we want to try it out ourselves. This requires messing with the ColdFusion server and the creation of a ton of test files.
My only concern would be that this, of course, opens you up to all kind of potential malicious problems (since you pretty much can't lock down things like CFFile or CreateObject() cause, well, what would be the point?). But, Boyan's thinking on this was that it is NOT a public script. You put it on your machine where you and you alone have access to it. This makes it only as dangerous as you want to be to yourself.
Now, there is plenty of testing that requires more than one page, but as far as seeing something on someone else's blog and having that "oh that's cool, let me try" desire, this could be very cool. I will be interested to see what other people think.