Many thanks to:

 A.M. Kuchling ( http://www.amk.ca/ )
    for the original parrot-gen.py

 Sam Ruby ( http://intertwingly.net/ )
    for fixing concatenation and the + operator

 Terry Reedy
    laid out refactoring plan for self.expression()

 Leopold Toetsch
    for tons of great advice with imcc, numerous 
    optimizations, showing how to do type inference, 
    and delivering parrot patches so fast my head spins. :)

 Luke Palmer
    for imcc and subroutine advice and optimization tips

 Joe Ryan
    suggested the PyObject<->PMC wrapper layer concept

 Klass-Jan Stol ( http://members.home.nl/joeijoei/parrot/ )
    for letting me steal the name from his lua-to-parrot 
    compiler, writing an extremely informative report, and
    working with me on the s-expression compiler.

 Gregoire Dooms  (http://www.dooms.org/)
    for helping me figure out how to compile my first
    attempt at embedding python objects in c :)

 Dan Sugalski ( http://www.sidhe.org/~dan/blog/ )
    for the "What the heck is..." category in his blog,
    leading the parrot project, and for the pie-thon
    challenge, even if the terms say he can't use this
    code. :)

 Allen Short  ( dash on #python )
    For a massive patch covering variable binding 
    and IMCC symbol declaration, and for showing
    me how to implement generators. :)

 David Chan ( http://sheetmusic.org.uk/ )
    For various bugfixes, augmented assignment,
    and "else" clauses in loops.

 Ole Martin Bjorndalen ( http://www.cs.uit.no/~olemb/ )
    for readlisp.py

 Sean O'Rourke 
    for explaining .Closure and new_pad semantics

 Greg Stein, Bill Tutt, Jeremy Hylton, and Mark Hammond
    for the python compiler package!

 Guido van Rossum
    for python of course! :)