It depends on several factors - your level of training, fitness and where you live. The better educated and fitter paramedics are eligible for the cooler jobs, and paramedics are found in some of the coolest places. Search and Rescue choppers would be, I think, the penultimate - exciting, challenging and rewarding to the extreme. Paramedics are also needed at sea on vessels with large crews (e.g. Research ships, cruise ships, oil rigs etc) or for expeditions. Most SWAT teams even have a fully trained paramedic on the team in case someone gets injured during a takedown.
There are lots of opportunities for paramedics, you just need to put in the effort to make sure you are one of the best, because competition for the good jobs is always tough. If possible, I would suggest looking at becoming a paramedic through the military, because they can offer you training opportunities that are difficult to come by elsewhere.