-When I Cosplay
-Reading/getting a new book
-Green tea, because ginseng makes you feel good. x)
-Watching my favorite singer
-Being alone, 'cause some people aggravate me. And it's easier to be yourself without everyone looking like "What the $#(*#% is she doing?"
-Ebay is always gonna be on this list. Lol
That's all I can think of, for now.
Seconded! I love that feeling of getting the whole costume together.

I never want to take them off. >..< Especially my Grell one. XD I came home in it, minus the wig and coat, from the last convention. Getting photographed with other people in cosplay is awesome, too. XD
Urm....So many. >.< Too many things.
Same as apparently everyone here; getting the things I order from Amazon/ebay.
Buying manga. X33 I have to look through the pages straight away. Buying books. Actually...buying anything new.
When something I'm making is complete, and looking at the finished result. Even if it's not that good.
Finding new awesome songs/AMV's/anime's to obsess over.
Someone else watching an anime with me.
Getting replies texts, messages on the internet, replies in the rps, etc. etc. etc. And thinking of what to write back.
Anime conventions.
Seeing my friends.
Finally, I always have an air of excitement about me whenever and old friend is coming to visit me, or I'm having a really passionate conversation with a friend I see day to day. Small talk is all good and well, but when shit gets deep and serious, it makes me happy inside to be so close to someone.
^^This especially. I love those conversations.
Urm.....There are probably billions more. D: