Very cool, I think it shows the size of the code loaded...I wonder if there is a way to get the runtime footprint?

While Tk is worth every byte, It uses:

Memory: main    Totals: 52513 bytes | 225 OPs
Memory: Tk      Totals: 154632 bytes | 1663 OPs
Memory: Tk::Adjuster    Totals: 99843 bytes | 2000 OPs
Memory: Tk::Balloon     Totals: 212545 bytes | 2939 OPs
Memory: Tk::BrowseEntry Totals: 126060 bytes | 2519 OPs
Memory: Tk::Canvas      Totals: 22194 bytes | 244 OPs
Memory: Tk::CursorControl       Totals: 161874 bytes | 2843 OPs
Memory: Tk::Entry       Totals: 122144 bytes | 2324 OPs
Memory: Tk::ItemStyle   Totals: 6995 bytes | 91 OPs
Memory: Tk::JPEG        Totals: 1911 bytes | 1 OPs
Memory: Tk::Label       Totals: 1824 bytes | 11 OPs
Memory: Tk::LabEntry    Totals: 4822 bytes | 77 OPs
Memory: Tk::MListbox    Totals: 214159 bytes | 3940 OPs
Memory: Tk::Menu        Totals: 193278 bytes | 4004 OPs
Memory: Tk::Pixmap      Totals: 2601 bytes | 6 OPs
Memory: Tk::ROText      Totals: 8104 bytes | 127 OPs
Memory: Tk::Scrollbar   Totals: 31046 bytes | 472 OPs
Grand Total: 1416545
[download]

And running the above and using taskman (win32) to view the footprint, it give ~8megs (base perl takes an extra 1.7m)...(unless my poor math skills have affected my thinking ;-)