Most everyone here should know at least one of the usual suspects (Ruby, Perl, Python, etc). They are all quite similar in capabilities.
Is introduction to loops at the top, in an hour?
Edit: The few newbies here which don't know a scripting language are hardly the ones voting this up...
Edit 2: BanzaiTokyo is free to explain the glaring superiority of one of the scripting languages over others...? :-)
Edit 3: erelde, so you really think a beginner's guide to a scripting language "gratifies [HN reader's] intellectual curiosity" enough to be top of HN...?