This group is now defunct, but there are a lot of active knitting, crocheting, and spinning groups in Seattle. Check out Capitol Hill Knitters (which, last I checked, meets every week at different places around the Hill) & Sheepless in Seattle (which has a running list of Puget Sound groups, most of which have a Ravelry presence or a Yahoo group or both).
Ravelry is still in beta, so put your email address in for a free invite. Wait time, last I heard, was about a week. It is totally worth it.