Running Games

They have some good running games here:
http://www.runningintheusa.com/More/Games.aspx

Its a great way to get to know your running partners, and it keeps you going.

A friend just did another one called: Fortunately-Unfortunately. It helped everyone stay loose (even wacky) and get to know each other fast:

For example, you say, "Unfortunately, there's a tiger behind the tree." Another runner says, "Fortunately, he doesn't eat runners." Another person says, "Unfortunately, he's looking at me and licking his lips." You say, "Fortunately, I brought along my tiger-jaw-clamper." And so on, alternating between fortunate and unfortunate things.