In Google Code Jam 2009, Round 1B, there is a problem called Decision Tree that lent itself to rather creative solutions.
Post your shortest solution; I'll update the Accepted Answer to the current shortest entry on a semi-frequent basis, assuming you didn't just create a new language just to solve this problem. :-P
Current rankings:
say("Case #$_:"),
$_=eval"''".'.<>'x<>,
s:[a-z]+:*(/ $&\\s/?:g,s/\)\s*\(/):/g,
eval"\$_=<>;say$_;"x<>for 1..<>
Newlines for legibility; none of them is necessary or counted in.
It uses features found only in the latest versions of Perl, so run with perl -M5.010 or later.
I used to be a Perl noob too, so this works almost the same as the ruby one. Original version 126 chars, optimizations by peutri.
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