I've been to a lot of parties in bars where the organizer orders a couple of pizzas for everyone to share. Most of the time they forget to supply plates or napkins and one's forced to awkwardly scarf down the pizza. However, I recently went to a going away party where I came across a genius way for serving a crowd pizza.
Instead of cutting the pizza into large triangular slices, the hostess asked the pizzeria to cut the pie into bite-sized slices. No piece was bigger than three inches, so it was easy to pick one up and pop it into your mouth. Plates and silverware were unnecessary and guests could have as much or as little pizza as they liked. The next time I offer pizza in a bar, I'm totally stealing this idea!