yep
#1 Low level (500'AGL) at night in the rain under NVG's in a Cobra Attack Helicopter, had a weapons controller short out and started slewing my 20mm left to right at 110 degrees per second, didn't know that was the problem but because of the lateral vibration the PIC actually thought it was a main rotor malfunction ... thought we were going to die ... Autorotated into a Farmers field and during the emergency shut down when Master Arm switch was selected to off the lateral vibrations stoped and we knew what the problem was. I put out a mayday call but due to our low altitude and range no one heard it.
#2 FL 310 flying in a C-550 had a main door seal go ... rapid depressurization ... took 3 calls for ATC (after I put my O2 mask on) to realize I was declaring an emergency, but after that they were great, immediately cleared to FL 250 and before we got there he had all the lower traffic scattered and kept us coming down to below 10,000, terminated the emergency and flew an ILS into TOL, taxied into a Cessna Service Center and got the problem seal fixed. Back to work in about 1 hr.
#3 Lost a fuel control computer on a BE-200, had to shut down the engine ( actually had to replace the engine because it high sided and overtorqed ) and do a single engine landing, inbound to the airport CT advised me I was #2 emergency in progress