Well, a general point I'd make about titles is that they have to serve as a bridge between the music and the visual, but a bridge the viewer has to cross - that is, not be too obvious.
So, that goes to say that you probably shouldn't isolate either the sound or the visual as the only source for your title (so, if you use the song title itself, make sure it somehow relates to the visual). So, if (as a generic example) you're making a DBZ video to Linkin Park's 'Breaking the Habit', don't name it 'Breaking the Habit' if there's no habit being broken there (and chances are, there isn't). At the same time, if you call it something like 'Goku's Big Battle', you're isolating the title to the visual only, making the music seem irrelevant - plus, it's just too obvious! I think putting plain and overt descriptions of what you'll see in the video is a mistake. Be symbolic. It's more fun.
And, a real pet peeve of mine when I look at video titles, is when they do fuse the visual and the song, but in a highly unimaginative, or non-sensical (the unfunny kind of non-sensical, anyway) way. Like, to use the above example, I'd think it would be a really bad idea to name the video 'Breaking Goku's Habit' (again, unless Goku is actually breaking a habit and not someone's back...). Please.
Well, then again, perhaps these rules best apply to more serious videos.
...And as for your actual title, I don't think you should hesitate too much Pen-Pen - it's symbolic on more than one level, and it's catchy to boot. I'd go for it
The Birds are using humanity in order to throw something terrifying at this green pig. And then what happens to us all later, that’s simply not important to them…
[/size]
