Thanks for the list. And for people like me who don't know much about (some of) them, here is a primer:
Ian Lance Taylor - gcc maintainer, creator of GNU UUCP
Rob Savoye - primary developer of Gnash
Tom Lane - member of the core PostgreSQL development team, standardization of JPEG
Lou Montulli - co-authored Lynx, came up with HTTP Cookies and HTTP Proxying
Jacob Kaplan-Moss - Django maintainer
Raymond Hettinger - core developer for Python
Margo Seltzer - Berkley DB architect
D. Richard Hipp - architect and primary author of SQLite
Ben Tilly - developed a bunch of Perl modules