Sierra College Astronomy - A fantasitc educational program recommended for anyone local who has an interest in Astronomy.
SETI Institute - The search for extraterrestrial life contines - this is the place to learn and contribute.
Galaxy Zoo - Anyone can help advance science by classifying galaxies and searching for the next supernova.

Randy Snook - A Sierra College photography instructor with probably the best Digital Photography course anywhere.
Lightroom Killer Tips

Rocklin Aquatics Masters Swimming (RAMS) - The Sacramento area's premier Masters swimming program - workouts three times a day, five days a week and one on Saturday.
Pacific Masters Swimming - The regional coordinator for Master's swimming.

Sierra Club -
Sierra Nevada Virtual Museum - Information about the Sierra's by Sierra College
REI -

Commonweath Club - Great speakers and online resources from San Francisco on a variety of topics.
World Affairs Council - Speakers focused solely on foreign affairs.

Treffpunkt Language Institute - German instruction in Bamberg Germany.
Sacramento Turn Verein Language School

iPhone Dev at Stanford - Great online resources to learn iPhone development - follow along with the Stanford students.
Leading Software Maniacs - The finest software leadership and project management training anywhere.
PHP Development - The official PHP web site.