Do you call before going to someone's house?

United States
@free_man (7342)
January 29, 2010 5:19pm CST
I have some people we know that will show up without calling and it really pisses me of when they don't call first. So would you go to someones house without calling first? I think it is rude of people that don't call to see if I want company. What about you do you think it is rude?