End of summer block parties...

Growing up in New York City I remember sweltering heat where you could hardly breathe, no a/c and only one BIG fan that didn't oscillate.  I remember sitting close to the fan when it was my turn for relief and if you talked into the fan your voice had a weird vibration to it now I have central air and milder summers and a best way to end the summer - the all important block party.  What makes a good block party?  Good food, good vibes, a great DJ and great friends that's something they don't tell you about in those touristy guide books.