Well there's this show on YouTube that uses HALO characters on a multiplyer setting to make a hilarious/interesting little internet series, that is my favorite show on the web. It's called Red vs. Blue. It has the different characters that are funny in their own different ways.
Here's blue team:

And here's Red:

No, blue team is not out-numbered, that picture is missing one of the guys. His name is Caboose(He has an IQ of about 5...):

Well I never though a show like that could get as deep as it did, but I was wrong. The plot is very good. This series is good enough to be on TV, and I would pay to see this in movie form.
Any other Red VS. Blue fans here?