I often go to the movies by myself. Earlier this week, I went to a tennis match by myself. I'll rarely do stuff like go out to bars or to eat by myself..as I'd rather just get something to go and eat in my living room. Bascially, if I want to do something and no one else is around or available, I don't have a problem going my myself...and sometimes even prefer it.
I like going to the movies by myself. I don't even mind eating at restaurants by myself, though I prefer it with someone(s) else. I also like traveling and sightseeing by myself, though I also like it with another person if we've got similar interests.
I like socializing with others, but prefer being with a couple of people rather than a large group. In general, I really dislike dealing with all the issues inherent in planning a group activity and at the end I feel like I didn't get to actually socialize with most of the people anyway.
I don't have a problem doing most things by myself. I knew I was fairly OK with this when I went to a japanese steakhouse tempa grill by myself surrounded by strangers. I also sat at a bar for two hours by myself last friday waiting for others to show up (I didn't want to stay at work and it was too hot to walk around DC).
I frequently go out to eat by myself. There is always a book in my purse or on my Treo.
This is not to say I'm antisocial. I love to do stuff with people too and lately find that more nights out of the week than not is spent out socializing with at least someone other than my husband. :)