RobH's sketches for the Komodo logo
Rob Hernandez is an ex-ActiveState employee. When he worked here he was responsible for the excellent designs that became the ActiveState critter logos -- since, and still, used on t-shirts and for ActiveState application logos.
I was happy to see that he recently put up some of his work on Flickr:
including his sketches for the Komodo head logo:
The latter are the precursor to the current Komodo IDE and Komodo Edit head icons:
And if you are more into the realism thing, check out this Komodo head.