Sam Adams. I stumbled on to Smalltalk at Tektronics in 1984 and have been hooked ever since. I co-founded KSC, Knowledge Systems Corporation, in 1987 which became a hotbed for Smalltalk on the east coast for the next 7 years. I am now with IBM, where I finally get to use Smalltalk instead of spending all my time helping others use it.
My current efforts in Squeak include helping port the KSC Smalltalk Archive (http://www.ksccary.com/squeak.htm); porting DMIX, a really cool MIDI music system developed by Daniel Oppenhiem of IBM Research; and other kinds of software archeology.
A recent contribution of mine to Squeak was some code that gives a Windoze look and feel to Squeak, including scroll bars. The code is in two UIUC Squeak Archives: