I like:

Books

Yoga (duh)

Gymnastics

Playing Video games (FPS and RPG, some MMOs)

Doggies

Travel

Bright colors

Music, both composing and listening

Ballet

Theatre, both performing and watching

Anything Irish

History, particularly Ancient History

Science, especially astronomy

Writing poetry and fiction

Tea (loose leaf preferred)

Baking cheesecakes and other tasty goods

Cooking healthy meals

Pizza and Ice Cream (in moderation)!

Intelligent Conversation