Some Z languages, I can't vouch they're all legit.

Though
Zero looks pretty wild*:
Code:
99 Bottles of Beer in Zero
--------------------------
by Seirian J. Pardoe
on 7/4/06
Compatible with Zero 1.0+
Zero intepreter can be found at
www.freewebs.com\blackdragonvb
in the VB section.
-=Best viewd in Lucida Console, size 10=-
/-[*99>]>--!-[p~ bottles of beer~]\
|$%[-[c]3£]\/[~,llaw eht no ~[<1]]/
\----------/\[[1>]~ bottle of beer~]--\
/[~,dnuora ti ssap dna nwod eno ekaT ~[<1]]/
\[[1>]~ Go to the store and buy some more.~]-\
/-----------------/
//0[~ 99~]>[[0]]>[[01>]]>[[05>]0>p][fx]
/---------/\[<0[<50]]<0[[<40]]-[0p<0[<50]]<[[0]]-\
//[[05>]0>p0p]0[~ No more~]>[[0]]>[[01>]]>[[05>]]>/
/--/\<[[<10]]<[[0]]<[~erom on ~0[<50]]<[[<30]]0\
/--/-![3£[2>]]->-[[01>]]->-%>![[02>]]->-[[5>]0>p0]/
\%-+-![3£[0]]->-[[1>]]->-%>![[0]]->-[[5>]0>p0]0\
\-\/->1-<0-[£]-<--[>1]-%--[<[<50]]<[[<30]]--/
//\-![3£[0]]->-[[1>]]->-[[5>]>p0p]\
\------------------[£]-<0-%-------/
I think there is no single preferred language here at CD, and even with individuals it depends on what the application is. I like VB or VBA for simplicity or graphics, or C for text, but even then I've done the opposite.
*
After reading some more, Zero is in the "esoteric" language category. I can't imagine why...