I got some great varieties in a seed exchange and also bought a collection from Lindenberg's Seeds (CDN Supplier). Zinnias are awesome to start from seed. Most germinated within 24 hours.
I started some indoors for an early start and will winter sow some more. Here's my varieties for 2010
Zowie Yellow Flame
Zahara Starlight Rose
Persian Carpet
Giants of California
Dahlia Fower Mix
Lilliput Mix
Cupid mix
Dark Jewels
Cut & Come again
Cactus
Pumilia Mix
Zig Zag