fapping, of course. But sometimes that's just depressing.
Going out of the house at midnight on a perfect-temperature spring night when it smells like rain, hopping into my car and rolling all the windows down, turning off the radio and dimming the interior/gauge lights, and just driving, hearing only the wind, the engine, and the thunder off in the distance.
A long, hot, almost unbearably hot, shower.
Laying in bed under the covers all day. Again, though, sometimes that's just depressing.
Finally solving a math/CS problem of some sort (but that hasn't happened lately )
Cooking up a big wok full of stir-fry vegetables, pasta, and chicken, seasoned with garlic, onions, pepper, worcestershire, soy sauce, and teriyaki.
Red meat.
Being in love / remembering old love.
Running or riding my bike just for the hell of it.
SLEEPING!
edit: forgot my dogs. Any dogs, really. I wish I was home with my dogs