In California, "going out" for me usually means heading over to somebody's house and watching movies, after going shopping for massive amounts of horrible preservative-laden sugary or salty snacks and possibly a pizza. Maybe some video games, or going to the movies as well.
When I actually go
out, it's normally the local Borders. Seems to be the hangout for the rejects of society.
In Austin, going out is almost always going out for lunch or dinner, followed by a movie or a bar. Or just going downtown. Sometimes for a concert, but normally I have to do things like that by myself, because nobody likes the music I like

. Or occasionally it's just again: people coming over, watching movies, talking, making dinner, playing video games. Drinking copious amounts of alcohol (musicians...).
Another kind of very specialized socialization is having sight-reading parties. Only for the nerdiest of music nerds...getting together with stacks of quartet/quintet/trio music and trying to bumble through them. And of course, talking more than actual playing.
I don't know. Socialization is a funny concept for me, because by nature I'm actually quite introverted... only children tend to know how to entertain themselves, and I'm not an exception. The thing is, I very much enjoy talking to people who have interesting things to say, so that will get me out of the house more than the promise of trying to get free drinks out of drunk louts downtown.
Jam it back in, in the dark.