I don't particularly enjoy flying the planes, due to the mouse, and the low missle capacity, but my biggest "oh crap" moments came from them. One was a friendly losing control and taking out my tank as I watched helpless, and another came when 5 of us were at the end of the carrier, waiting for something to spawn so we could get off the damn thing. No one had the gun (I had just gotten out after wasting two minutes of not seeing a target), and a plane came in at us. The guy came in too fast and clipped the edge of the runway, blowing up, but the remains of the plane skidded across, taking out every single recently spawned marine in one kamikaze move.
Awesome yet terrible.