Showtunes - my Guilty pleasure

I know that I posted a short 10 hours ago, but here I am.  At work.

Monday mornings are for the birds.  I miss my son.  I miss my bed.

So, since no one is at the office yet, I turned on my "Showtune" playlist on Pandora that includes the soundtracks from musicals, Disney shows, and Glee.

And who can't be happier with lyrics from a show that starts like this:

And I know things now, 

Many valuable things, 

That I hadn't known before: 

Do not put your faith 

In a cape and a hood, 

They will not protect you 

The way that they should. 

And take extra care with strangers, 

Even flowers have their dangers. 

And though scary is exciting, 

Nice is different than good. 

Ah.  I will sit back.  Drink my Diet Pepsi and enjoy my secret guilty pleasure.

By the way, if you can name this musical, you get 10 points in my book.  Leave me a comment.  Let's see who guesses first!!