Back in my Lyneham days, we in ATC used to witness two types of C-130 engine starts apart from the "normal" ones.
1. Slipstream.
2. Windmill.
What WASALOADIE described, ATC used to refer to as the Slipstream start, when one C-130 was backed up to the one needing the start and used propwash to turn the prop of the engine/s to be started.
For us, the Windmill start was when a C-130 would gather speed on the runway and at the appropriate time, unfeather the prop of the engine to be started, using the airflow to start it.
Happy days.