Funkatron.com has a really good article on a Google App Engine from a PHP developer’s perspective.  Very well written and love the sense of humor.  I think the best line in the article is

Otherwise, Python is a good fit for me philosophy-wise, because it’s totally the anti-Perl, lacking goofy magic characters and 1000 ways of doing the same thing. I can’t stand languages where “~^s” means “find all numbers that start with the letter ‘s’, add them, multiply them by 75, and then post the result to Twitter”. I’m not freakin’ R2D2 here.

I personaly haven’t tried out Google App Engine but will here in the near future.  I have to freshen up Python skills.  I definatly belive in what funkatron says about learning more than one coding language.

Plus, getting hung up on one language is a sure way to be a boring dude who gets caught up in lame religious language wars.