I've joined this one a bit late but it has cheered me up looking at everyone's list.
My favourite 'tings:
1.Finishing a hard day at work and going home to the house for a bong and some entertainment.
2. Having a chat with the people in the newsagents every day (and the sandwich shop).
3. As Mrs B said, having a great trip with one of your best mates - can't stop laughing.
4. Watching the MTV chill-out zone while tripping - absolutely amazing.
5. Listening to music and mixing it how you like.
6. Female company (doesn't need to involve sex! - this is an innocent comment)
7. Sex with the person you love. (not so innocent comment)
8. The Psy-Trance forum!!!! - and all the peeps on it.
9. Other people being happy.
10. Learning to do new stuff (like scratch records, write music, growing cactus', drumming, play squash etc...)
11. Computer games!
12. Laughing in general at anything 'cos it makes me happy.