One that I'd like to try is a rehash of a sort of mini-series I did with Alternity.
There was a Playstation game called Rogue Trip. It was a car combat game, like Twisted Metal, but you could also run around and pick up tourists. You drove them to interesting photo opps and made extra cash. The motto was "we fight the fights so you can see the sights."
So the PCs were basically mercenary types that set up a company to take people to places, where they just weren't supposed to be, as tourists. One adventure had the group trying to smuggle a known criminal into the governor's mansion to get his picture taken during a meet-and-greet dinner. Another one was a photo safari in a Jurassic Park type setting.
The real kicker was the financial backer of the group had a strict no-kill policy. No matter what else they had to do, the PCs could NOT kill under any conditions.
Overall, loads of fun.