Python vs Ruby
This chart appears to show that Python is growing, and so is Ruby.
Unfortunately, when you compare it to other popular languages they are all pretty small potatoes still. Amazingly, on that last chart it looks like C is going up again, java is trending a little down. Perl seems to be trending down too, but PHP is holding steady. I've been looking around for a new hosting company and I'm amazed that nearly everyone offers MySQL and PHP, yet there almost no one that offers PostgreSQL and Python (a clearly superior solution). I suppose it's understandable since there's basically only one way to do PHP and Python has a bunch of ways of putting up pages, Java is pretty much in the same boat in that sense.